What If the Moon Were Half as Far From Earth?
Move the Moon to half its present distance and the first thing you would notice is obvious: it wo…
South Korea’s Nuri Rocket Will Launch 15 Satellites — What Will Each One Do?
One rocket, fifteen spacecraft, and almost fifteen different reasons to go to orbit. South Korea’…
What Would Happen If an Astronaut Took Off a Spacesuit in Space?
Taking off a spacesuit in space would not make an astronaut explode, freeze solid, or instantly tu…
Why Does the Moon Turn Red During a Lunar Eclipse?
A total lunar eclipse seems as if it should make the Moon disappear. Earth moves directly between…
How Does the James Webb Space Telescope See the Universe in Infrared?
The James Webb Space Telescope does not see the universe the way human eyes do. Most of the light …
How Do Space Agencies Track Thousands of Pieces of Space Debris?
A piece of space debris can cross the sky at several kilometres per second, disappear beyond the …
Could Space Junk Make Earth’s Orbit Too Dangerous to Use?
Space junk does not need to blanket the space above Earth to cause a serious problem. If enough d…
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