Questions with the keyword 'earth'

• What caused a planet to crash into Earth and create the Moon? by T-Dog to RocketRich Comments: (No comments so far )
• Did Mars’ environment used to be like the Earth’s? by 735btr45 to Col Op, Elie, Floris, Jenn, RocketRich Comments: (So far, one comment )
• if Earth and Mars swapped places would it be possible to live on Mars by RealDaringNote62 to RocketRich, Jenn, Floris, Elie, Col Op Comments: (So far, one comment )
• why do your bones compress in space causing you to be shorter when you return to earth? by bugsie to Jenn Comments: (No comments so far )