Top five milestones in space exploration history
Top five milestones in space exploration history
Erik Gregersen, astronomy and space exploration editor of Encyclopædia Britannica, picking his top five milestones in space exploration.
Encyclopædia Britannica, Inc.
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Encyclopædia Britannica, Inc.Erik Gregersen, astronomy and space exploration editor of Encyclopædia Britannica, picking his top five milestones in space exploration.
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Encyclopædia Britannica, Inc.Overview of the Hubble Space Telescope, including how it works and its important discoveries.
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© Open University (A Britannica Publishing Partner)A discussion of gravitational lenses and the detection of dark matter in galaxies.
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© Open University (A Britannica Publishing Partner)An overview of Apollo 11's landing on the Moon, including the continuing scientific study of the rock specimens collected during the mission.
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NASALiftoff and flight to the Moon of Apollo 11 with astronauts Neil Armstrong, Edwin Aldrin, and Michael Collins. After landing at Tranquility Bay, Armstrong became the first person to set foot on the Moon.
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© Behind the News (A Britannica Publishing Partner)Learn about the Hubble Space Telescope's impact on astronomy.
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© MinutePhysics (A Britannica Publishing Partner)Learn how infrared energy from stars causes space and the night sky to appear dark.
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Encyclopædia Britannica, Inc.Overview of the Apollo 11 spaceflight in which U.S. astronauts became the first people to walk on the Moon.
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© MinutePhysics (A Britannica Publishing Partner)Learn how diffraction affects stellar images.
Transcript
The top five milestones of space exploration I would pick are:
Number 1: the launch of the first artificial satellite, Sputnik 1, in 1957;
Number 2: the flight of the first man, Yury Gagarin, into space, and that proved that people could survive in space and return;
Number 3: the landing of Apollo 11 on the Moon;
Number 4: the launch of the Hubble Space Telescope. That solved several key questions about the universe; and
Number 5: the flights of SpaceShipOne--the first private spacecraft. That is I think the beginning of the new space age in which space is not just something that big countries do, but space is something that private citizens can do.
Number 1: the launch of the first artificial satellite, Sputnik 1, in 1957;
Number 2: the flight of the first man, Yury Gagarin, into space, and that proved that people could survive in space and return;
Number 3: the landing of Apollo 11 on the Moon;
Number 4: the launch of the Hubble Space Telescope. That solved several key questions about the universe; and
Number 5: the flights of SpaceShipOne--the first private spacecraft. That is I think the beginning of the new space age in which space is not just something that big countries do, but space is something that private citizens can do.