My first carving. Halloween pumpkin

My first carving was on October 31, 1999.

When I was 12 I made my personal Jack-o’-lantern. 

Nasa

     The National Aeronautics and Space Administration is an independent agency of the executive branch of the United States federal government responsible for the civilian space program, as well as aeronautics and aerospace research.

     President Dwight D. Eisenhower established NASA in 1958 with a distinctly civilian (rather than military) orientation encouraging peaceful applications in space science. The National Aeronautics and Space Act was passed on July 29, 1958, disestablishing NASA's predecessor, the National Advisory Committee for Aeronautics (NACA). The new agency became operational on October 1, 1958.

     Since that time, most US space exploration efforts have been led by NASA, including the Apollo Moon landing missions, the Skylabspace station, and later the Space Shuttle. Currently, NASA is supporting the International Space Station and is overseeing the development of the Orion Multi-Purpose Crew Vehicle, the Space Launch System and Commercial Crew vehicles. The agency is also responsible for the Launch Services Program (LSP) which provides oversight of launch operations and countdown management for unmanned NASA launches.

     NASA science is focused on better understanding Earth through the Earth Observing System, advancing heliophysics through the efforts of the Science Mission Directorate's Heliophysics Research Program, exploring bodies throughout the Solar System with advanced robotic spacecraft missions such as New Horizons, and researching astrophysics topics, such as the Big Bang, through the Great Observatories and associated programs. NASA shares data with various national and international organizations such as from the Greenhouse Gases Observing Satellite. Since 2011, NASA has been criticized for low cost efficiency, achieving little results in return for high development costs.

     From 1946, the National Advisory Committee for Aeronautics (NACA) had been experimenting with rocket planes such as the supersonic Bell X-1. In the early 1950s, there was challenge to launch an artificial satellite for the International Geophysical Year (1957–58). An effort for this was the American Project Vanguard. After the Soviet launch of the world's first artificial satellite (Sputnik 1) on October 4, 1957, the attention of the United States turned toward its own fledgling space efforts. The US Congress, alarmed by the perceived threat to national security and technological leadership (known as the "Sputnik crisis"), urged immediate and swift action; President Dwight D. Eisenhower and his advisers counseled more deliberate measures. On January 12, 1958, NACA organized a "Special Committee on Space Technology", headed by Guyford Stever. On January 14, 1958, NACA Director Hugh Dryden published "A National Research Program for Space Technology" stating:

     It is of great urgency and importance to our country both from consideration of our prestige as a nation as well as military necessity that this challenge [Sputnik] be met by an energetic program of research and development for the conquest of space... It is accordingly proposed that the scientific research be the responsibility of a national civilian agency... NACA is capable, by rapid extension and expansion of its effort, of providing leadership in space technology.

     

     While this new federal agency would conduct all non-military space activity, the Advanced Research Projects Agency (ARPA) was created in February 1958 to develop space technology for military application. 

     On July 29, 1958, Eisenhower signed the National Aeronautics and Space Act, establishing NASA. When it began operations on October 1, 1958, NASA absorbed the 43-year-old NACA intact; its 8,000 employees, an annual budget of US$100 million, three major research laboratories (Langley Aeronautical Laboratory, Ames Aeronautical Laboratory, and Lewis Flight Propulsion Laboratory) and two small test facilities. A NASA seal was approved by President Eisenhower in 1959. Elements of the Army Ballistic Missile Agency and the United States Naval Research Laboratory were incorporated into NASA. A significant contributor to NASA's entry into the Space Race with the Soviet Union was the technology from the German rocket program led by Wernher von Braun, who was now working for the Army Ballistic Missile Agency (ABMA), which in turn incorporated the technology of American scientist Robert Goddard's earlier works. Earlier research efforts within the US Air Force and many of ARPA's early space programs were also transferred to NASA. In December 1958, NASA gained control of the Jet Propulsion Laboratory, a contractor facility operated by the California Institute of Technology.

The Pentagon

     The Pentagon is the headquarters of the United States Department of Defense, located in Arlington County, Virginia, across the Potomac River from Washington, D.C. As a symbol of the U.S. military, The Pentagon is often used metonymically to refer to the U.S. Department of Defense.

     The Pentagon was designed by American architect George Bergstrom (1876–1955), and built by general contractor John McShain of Philadelphia. Ground was broken for construction on September 11, 1941, and the building was dedicated on January 15, 1943. General Brehon Somervell provided the major motive power behind the project; Colonel Leslie Groves was responsible for overseeing the project for the U.S. Army.

     The Pentagon is one of the world's largest office buildings, with about 6,500,000 sq ft (600,000 m²), of which 3,700,000 sq ft (340,000 m²) are used as offices. Approximately 23,000 military and civilian employees and about 3,000 non-defense support personnel work in the Pentagon. It has five sides, five floors above ground, two basement levels, and five ring corridors per floor with a total of 17.5 mi (28.2 km) of corridors. The Pentagon includes a five-acre (20,000 m²) central plaza, which is shaped like a pentagon and informally known as "ground zero," a nickname originating during the Cold War on the presumption that it would be targeted by the Soviet Union at the outbreak of nuclear war. 

     On September 11, 2001, exactly 60 years after the building's construction began, American Airlines Flight 77 was hijacked and flown into the western side of the building, killing 189 people (59 victims and the five perpetrators on board the airliner, as well as 125 victims in the building), according to the official report. It was the first significant foreign attack on Washington's governmental facilities since the city was burned by the British during the War of 1812.

Hollywood Sign

     The Hollywood Sign (formerly the Hollywoodland Sign) is a landmark and American cultural icon located in Los Angeles, California. It is situated on Mount Lee, in the Hollywood Hills area of the Santa Monica Mountains. The sign overlooks Hollywood, Los Angeles.

     "HOLLYWOOD" is spelled out in 44 foot (13.4 m) tall white capital letters and is 352 feet (107.3 m) long. The sign was originally created in 1923 as an advertisement for a local real estate development, but due to increasing recognition and symbolism, the sign was left up. The sign has been a frequent target of pranks and vandalism across the decades, but it has since undergone restoration, including the installation of a security system to deter vandalism. The sign is protected and promoted by The Trust For Public Land, a non-profit organization, while its site and the surrounding land are part of Griffith Park.

     From the ground, the contours of the hills give the sign a wavy appearance. When observed at a comparable altitude, the letters appear nearly level.

     The sign makes frequent appearances in popular culture, particularly in establishing shots for films and television programs set in or around Hollywood. Signs of similar style, but spelling different words, are frequently seen as parodies.

     The sign was erected in 1923 and originally read "HOLLYWOODLAND." Its purpose was to advertise the name of a new segregated housing development in the hills above the Hollywood district of Los Angeles. H.J. Whitley had already used a sign to advertise his development Whitley Heights, which was located between Highland Avenue and Vine Street. He suggested to his friend Harry Chandler, the owner of the Los Angeles Times newspaper, that the land syndicate in which he was involved make a similar sign to advertise their land. Real estate developers Woodruff and Shoults called their development "Hollywoodland" and advertised it as a "superb environment without excessive cost on the Hollywood side of the hills."

     They contracted the Crescent Sign Company to erect 13 letters on the hillside, each facing south. The sign company owner, Thomas Fisk Goff (1890–1984), designed the sign. Each letter was 30 feet (9.1 m) wide and 50 feet (15.2 m) high, and the whole sign was studded with some 4,000 light bulbs. The sign would flash in segments: "HOLLY," "WOOD", and "LAND" would first light up individually, then the whole sign would light up. Below the Hollywoodland sign was a searchlight to attract more attention. The poles that supported the sign were hauled to the site by mules. Cost of the project was $21,000, equivalent to $295,189 in 2016.  

     The sign was officially dedicated in 1923. It was intended only to last a year and a half, but after the rise of American cinema in Los Angeles during the Golden Age of Hollywood, the sign became an internationally recognized symbol and was left there.

Washington, D.C. (District of Columbia)

     Washington, D.C., District of Columbia is the capital of the United States.

     The signing of the Residence Act on July 16, 1790, approved the creation of a capital district located along the Potomac River on the country's East Coast. The U.S. Constitution provided for a federal district under the exclusive jurisdiction of the Congress and the District is therefore not a part of any state (Article 1, section 8.17 of the U.S. Constitution set forth that a district of no more than 10 miles square should house the new seat of government. So no one state could claim the President’s House). 

     The states of Maryland and Virginia each donated land to form the federal district, which included the pre-existing settlements of Georgetown and Alexandria. Named in honor of President George Washington, the City of Washington was founded in 1791 to serve as the new national capital. In 1846, Congress returned the land originally ceded by Virginia; in 1871, it created a single municipal government for the remaining portion of the District.

     Washington had an estimated population of 681,170 as of July 2016. Commuters from the surrounding Maryland and Virginia suburbs raise the city's population to more than one million during the workweek. The Washington metropolitan area, of which the District is the principal city, has a population of over 6 million, the sixth-largest metropolitan statistical area in the country.

     The centers of all three branches of the federal government of the United States are in the District, including the Congress, President, and Supreme Court. Washington is home to many national monuments and museums, which are primarily situated on or around the National Mall. The city hosts 176 foreign embassies as well as the headquarters of many international organizations, trade unions, non-profit organizations, lobbying groups, and professional associations. 

     A locally elected mayor and a 13‑member council have governed the District since 1973. However, the Congress maintains supreme authority over the city and may overturn local laws. D.C. residents elect a non-voting, at-large congressional delegate to the House of Representatives, but the District has no representation in the Senate. The District receives three electoral votes in presidential elections as permitted by the Twenty-third Amendment to the United States Constitution, ratified in 1961.

Clockwise from top right United States Capitol, Washington Monument, the White House, Smithsonian Institution Building, Lincoln Memorial and Washington National Cathedral

Blair House or President’s Guest House

     The President’s Guest House, commonly known as Blair House, is a complex of four formerly separate buildings—Blair House, Lee House, Peter Parker House, and 704 Jackson Place—located in Washington, D.C., the capital of the United States. A major interior renovation of these 19th century residences between the 1950s and 1980s resulted in their reconstitution as a single facility.

     The President's Guest House is one of several residences owned by the United States government for use by the President and Vice President of the United States; other such residences include the White House, Camp David, One Observatory Circle, the Presidential Townhouse, and Trowbridge House. The President's Guest House has been called "the world's most exclusive hotel" because it is primarily used to host visiting dignitaries and other guests of the president. It is larger than the White House and closed to the public.

     Blair House was constructed in 1824; it is the oldest of the four structures that comprise the President's Guest House. The original brick house was built as a private home for Joseph Lovell, eighth Surgeon General of the United States Army. It was acquired in 1836 by Francis Preston Blair, a newspaper publisher and influential advisor to President Andrew Jackson, and remained in his family for the following century.

     Francis Blair's son Montgomery Blair, who served as Postmaster General in Abraham Lincoln's administration, succeeded his father as resident of Blair House.

     In 1939, a commemorative marker was placed at Blair House by the United States Department of the Interior, becoming the first building to acquire a federally recognized landmark designation; prior landmarks had been monuments and historic sites other than buildings. It would be formally designated a National Historic Landmark in 1973.

     Beginning in 1942, the Blair family began leasing the property to the U.S. government for use by visiting dignitaries; the government purchased the property outright the following December. The move was prompted in part by a request from Eleanor Roosevelt, who found the casual familiarity Winston Churchill displayed during his visits to the White House off-putting. On one occasion, Churchill tried to enter Franklin Roosevelt's private apartments at 3:00 a.m. to wake the president for a conversation. 

     During much of the presidency of Harry Truman, Blair House served as the temporary residence of President Truman while the interior of the White House was being renovated. On November 1, 1950, Puerto Rican nationalists Griselio Torresola and Oscar Collazo attempted to assassinate President Truman in Blair House. The assassination was foiled, in part by White House policeman Leslie Coffelt, who killed Torresola but was mortally wounded by him.

Number One Observatory Circle

     Is the official residence of the Vice President of the United States.

     Located on the northeast grounds of the U.S. Naval Observatory in Washington, D.C., the house was built in 1893 for its superintendent. The Chief of Naval Operations (CNO) liked the house so much that in 1923 he took over the house for himself. It remained the residence of the CNO until 1974, when Congress authorized its transformation to an official residence for the Vice President, though a temporary one. In fact, by law, it is still the "official temporary residence of the Vice President of the United States." The 1974 congressional authorization covered the cost of refurbishment and furnishing the house.

     Although Number One Observatory Circle was made available to the Vice President in 1974, three years passed before a Vice President lived full-time in the house. Vice President Gerald Ford became President before he could use the house. His Vice President, Nelson Rockefeller, primarily used the home for entertaining as he already had a well-secured residence in Washington, D.C., though the Rockefellers donated millions of dollars of furnishings to the house. Vice President Walter Mondale was the first Vice President to move into the house. Every Vice President since has lived there.

     The house at One Observatory Circle was designed by architect Leon E. Dessez and built in 1893 for $20,000 for the use of the superintendent of the Naval Observatory who was the original resident. It is built in the Queen Anne style popular in the last quarter of the nineteenth century.

     It was built on 13 acres of land that had originally been part of a 73-acre farm called Northview, which the Navy purchased in 1880. The home was originally dark red brick. Then in 1960, it was painted "feather" gray and, in 1963, white with black shutters. Now it is cream colored.

     In 1966, in response to the John F. Kennedy assassination, Congress passed a law creating "an official residence for the Vice President of the United States in the District of Columbia" and designating "approximately ten acres at the United States Naval Observatory" for such use. The exact location was to be determined by GAO and the Navy later, and construction was to commence on the residence when funding was available once the Vietnam War was over. In the interim, the Secret Service paid for expensive upgrades to the private homes of Vice-Presidents Hubert Humphrey, Spiro Agnew and Gerald R. Ford. Agnew only lived in his house for three months before resigning, and shortly thereafter sold it at a large profit, in part because of the upgrades (additional quarters for the Secret Service, fences and a new driveway for example) paid for by the government. 

     This resulted in a minor scandal and a subsequent investigation showed that it would be cheaper to set up the new Vice-Presidential residence immediately, rather than continue to secure private homes. In July 1974 Congress passed a new law to make Admiral's House the "official temporary residence of the Vice-President of the United States" effective upon the termination of service of the incumbent Chief of Naval Operations. Work began on preparing Admiral's House to be temporary Vice-President's residence later that fall, after Nixon's resignation and the CNO was moved to Quarters A at the Navy Yard. 

     The house formally opened as the vice presidential residence in September 1975. However, Nelson Rockefeller, the vice president at the time, chose to live in his larger private home instead and only used Admiral's House for entertaining. In January 1977, Walter Mondale became the first vice president to live in the house, and it has served as the home of every vice president since.

Presidents of the United States of America

     The President of the United States (informally called "Potus") is the head of state and head of government of the United States. The president directs the executive branch of the federal government and is the commander-in-chief of the United States Armed Forces.

     The president is considered to be the world's most powerful political figure, as the leader of the only contemporary global superpower. The role includes being the commander-in-chief of the world's most expensive military with the second largest nuclear arsenal.

     Article II, Section 1, Clause 5 of the Constitution sets the following qualifications of eligibility about holding the presidency:

- be a natural-born citizen of the United States;

- be at least thirty-five years old;

- be a resident in the United States for at least fourteen years.

     Take a look to the list of Presidents and their presidency 

1	George Washington	April 30, 1789 – March 4, 1797
2	John Adams	March 4, 1797 – March 4, 1801
3	Thomas Jefferson	March 4, 1801 – March 4, 1809
4	James Madison	March 4, 1809 – March 4, 1817
5	James Monroe	March 4, 1817 – March 4, 1825
6	John Q. Adams	March 4, 1825 – March 4, 1829
7	Andrew Jackson	March 4, 1829 – March 4, 1837
8	Martin Van Buren	March 4, 1837 – March 4, 1841
9	William H. Harrison	March 4, 1841 – April 4, 1841 (Died in office)
10	John Tyler	April 4, 1841 – March 4, 1845
11	James K. Polk	March 4, 1845 – March 4, 1849
12	Zachary Taylor	March 4, 1849 – July 9, 1850 (Died in office)
13	Millard Fillmore	July 9, 1850 – March 4, 1853
14	Franklin Pierce	March 4, 1853 – March 4, 1857
15	James Buchanan	March 4, 1857 – March 4, 1861
16	Abraham Lincoln	March 4, 1861 – April 15, 1865 (Died in office)
17	Andrew Johnson	April 15, 1865 – March 4, 1869
18	Ulysses S. Grant	March 4, 1869 – March 4, 1877
19	Rutherford B. Hayes	March 4, 1877 – March 4, 1881
20	James A. Garfield	March 4, 1881 – September 19, 1881 (Died in office)
21	Chester A. Arthur	September 19, 1881 – March 4, 1885
22	Grover Cleveland	March 4, 1885 – March 4, 1889
23	Benjamin Harrison	March 4, 1889 – March 4, 1893
24	Grover Cleveland	March 4, 1893 – March 4, 1897
25	William McKinley	March 4, 1897 – September 14, 1901 (Died in office)
26	Theodore Roosevelt	September 14, 1901 – March 4, 1909
27	William H. Taft	March 4, 1909 – March 4, 1913
28	Woodrow Wilson	March 4, 1913 – March 4, 1921
29	Warren G. Harding	March 4, 1921 – August 2, 1923 (Died in office)
30	Calvin Coolidge	August 2, 1923 – March 4, 1929
31	Herbert Hoover	March 4, 1929 – March 4, 1933
32	Franklin D. Roosevelt	March 4, 1933 – April 12, 1945 (Died in office)
33	Harry S. Truman	April 12, 1945 – January 20, 1953
34	Dwight D. Eisenhower	January 20, 1953 – January 20, 1961
35	John F. Kennedy	January 20, 1961 – November 22, 1963 (Died in office)
36	Lyndon B. Johnson	November 22, 1963 – January 20, 1969
37	Richard Nixon	January 20, 1969 – August 9, 1974 (Resigned from office)
38	Gerald Ford	August 9, 1974 – January 20, 1977
39	Jimmy Carter	January 20, 1977 – January 20, 1981
40	Ronald Reagan	January 20, 1981 – January 20, 1989
41	George H. W. Bush	January 20, 1989 – January 20, 1993
42	Bill Clinton	January 20, 1993 – January 20, 2001
43	George W. Bush	January 20, 2001 – January 20, 2009
44	Barack Obama	January 20, 2009 – January 20, 2017
45	Donald Trump	January 20, 2017 – present

The White House

     Located at 1600 Pennsylvania Avenue NW in Washington, D.C., the White House is the official residence and workplace of the President of the United States of America. The construction began in 1792 and the place has been the residence of every U. S. president since John Adams, the second one.

     The building has classical inspiration sources, that could be found directly or indirectly in the Roman architect Vitruvius or in Andrea Palladio styles; Palladio being an Italian architect of the Renaissance which had a considerable influence on the Western architecture (Palladian architecture).

     The residence was designed by Irish-born architect James Hoban in the neoclassical style. Construction took place between 1792 and 1800 using Aquia Creek sandstone painted white. When Thomas Jefferson moved into the house in 1801, he (with architect Benjamin Henry Latrobe) added low colonnades on each wing that concealed stables and storage. In 1814, during the War of 1812, the mansion was set ablaze by the British Army in the Burning of Washington, destroying the interior and charring much of the exterior. Reconstruction began almost immediately, and President James Monroe moved into the partially reconstructed Executive Residence in October 1817. Exterior construction continued with the addition of the semi-circular South portico in 1824 and the North portico in 1829.

     Because of crowding within the executive mansion itself, President Theodore Roosevelt had all work offices relocated to the newly constructed West Wing in 1901. Eight years later in 1909, President William Howard Taft expanded the West Wing and created the first Oval Office, which was eventually moved as the section was expanded. In the main mansion, the third-floor attic was converted to living quarters in 1927 by augmenting the existing hip roof with long shed dormers. A newly constructed East Wing was used as a reception area for social events; Jefferson's colonnades connected the new wings. East Wing alterations were completed in 1946, creating additional office space. By 1948, the house's load-bearing exterior walls and internal wood beams were found to be close to failure. Under Harry S. Truman, the interior rooms were completely dismantled and a new internal load-bearing steel frame constructed inside the walls. Once this work was completed, the interior rooms were rebuilt. 

     The modern-day White House complex includes the Executive Residence, West Wing, East Wing, the Eisenhower Executive Office Building—the former State Department, which now houses offices for the President's staff and the Vice President—and Blair House, a guest residence. The Executive Residence is made up of six stories—the Ground Floor, State Floor, Second Floor, and Third Floor, as well as a two-story basement. The property is a National Heritage Site owned by the National Park Service and is part of the President's Park. In 2007, it was ranked second on the American Institute of Architects list of "America's Favorite Architecture".