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This includes national space programs, industry and commercial space programs which train and/or hire their own professional astronauts. The flags indicate the astronaut's primary citizenship during his or her time as an astronaut. The symbol identifies female astronauts. The symbol indicates astronauts who have left low Earth orbit.
Former planets of the Solar System Former planet Discovery Removal Current status Notes The Morning Star [NB 1]: Antiquity: Antiquity: Aspects of Venus "Phosphorus", the Morning Star of Greek antiquity (Eosphorus, the Dawn-Bringer; called "Lucifer" by the Romans), and "Hesperus", the Evening Star (called "Vesper" by the Romans), were later identified as a single planet, Venus (Aphrodite).
Countries (and successor states) whose citizens have flown in space as of January 2024. The criteria for determining who has achieved human spaceflight vary. The Fédération Aéronautique Internationale (FAI) defines spaceflight as any flight over 100 kilometres (62 mi), while in the United States, professional, military and commercial astronauts who travel above an altitude of 50 miles (80 ...
The record for most time in space is held by Russian cosmonaut Oleg Kononenko, who has spent 1110 days, 14 hours, 57 minutes in space over five missions. He broke the record of Gennady Padalka on 4 February 2024 at 07:30:08 UTC during his fifth spaceflight aboard Soyuz MS-24 / 25 for a one year long-duration mission on the ISS . [ 21 ]
After the name, denotes sub-orbital space travellers who have flown into orbit on a subsequent space flight. After the name, denotes space travellers who have flown to the Moon without landing. After the name, denotes space travellers who have walked on the Moon. ‡ After the name, denotes those who died during their first spaceflight. [nb 1] †
Pluto was last and least of them. An icy dwarf only half the size of the United States, it was on average 3.7 billion miles from the sun. It also has a decidedly strange orbit that was highly ...
The following is a list of astronomers, astrophysicists and other notable people who have made contributions to the field of astronomy.They may have won major prizes or awards, developed or invented widely used techniques or technologies within astronomy, or are directors of major observatories or heads of space-based telescope projects.
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