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Space Facts

Space Exploration Facts

Explore surprising facts and verified stats about Space Exploration. Find memorable numbers, records, comparisons, and bite-size trivia that help you understand this topic quickly and share it with confidence.

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Low Earth orbit needs about 7.8 km/s of speed
Space Spaceflight Vehicles
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Low Earth orbit needs about 7.8 km/s of speed

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Yuri Gagarin was the first human in space
Space Astronauts
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Yuri Gagarin was the first human in space

Shahzad Mahota Published By Shahzad Mahota @shahzad-mahota
Water ice can survive in permanently shadowed lunar craters
Space Moon
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Water ice can survive in permanently shadowed lunar craters

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Voyager 1 is the farthest human-made object from Earth
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Voyager 1 is the farthest human-made object from Earth

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The ISS orbits Earth about once every 90 minutes
Space Space Stations
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The ISS orbits Earth about once every 90 minutes

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Astronauts can grow a few centimeters taller in space
Space Astronauts
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Astronauts can grow a few centimeters taller in space

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The James Webb Space Telescope sees mainly in infrared
Space Telescopes
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The James Webb Space Telescope sees mainly in infrared

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Astronaut footprints on the Moon can last millions of years
Space Moon
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Astronaut footprints on the Moon can last millions of years

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Space Astronauts
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Microgravity steadily strips calcium from astronaut bones

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Space Space Exploration
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Parker Solar Probe skimmed through the Sun’s corona in 2021

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Space Astronauts
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Head-down bed rest mimics fluid shifts of microgravity

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Space Astronauts
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NASA’s Mercury 7 were America’s first astronaut group

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Space Satellites & Orbit
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The geostationary belt is crowded with live and dead satellites

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Space Spaceflight Vehicles
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Delta-v budgets decide which orbits a spacecraft can reach

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Space Satellites & Orbit
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Satellite flood maps help responders see disasters from above

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Space Planets
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Uranus holds the coldest planetary atmosphere measured near 49 K

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Space Astronomy Basics
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The Kármán line near 100 km marks where space begins

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Space Mars
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Martian blueberries are tiny hematite spheres on the surface

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Space Planets
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InSight sized Mars’ liquid core at roughly 1,830 kilometers in radius

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Space Mars
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Ingenuity completed dozens of flights on Mars

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Space Asteroids & Comets
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Hayabusa2 returned samples from asteroid Ryugu

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Space Planets
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Mercury is the second-densest planet after Earth

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Space Spaceflight Vehicles
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Solid rockets ignite once; liquid engines can throttle and stop

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Space Satellites & Orbit
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A GPS constellation keeps shared clocks across the sky

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Space Planets
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Jupiter’s magnetic poles sit about ten degrees off its spin axis

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Space Exploration