The average distance between Earth and Mars is 140 million miles (225 million km ... Khan is a Senior Mission Analyst for the European Space Agency (ESA). His work involves studying the orbital ...

Students had questions. The answers came from an astronaut in the International Space Station in an out of this world school ...

NASA is tracking a truck-sized asteroid which is set to hurtle by Earth today at many times the velocity of a speeding bullet ...

BS4 may be anywhere between 17 and 40 feet across, and will approach at about twice the distance between the Earth and moon.