Nasa names companies to build Moon landers for human missions
The space agency announces the companies that will develop landers to return astronauts to the Moon.
Author Archives: BBC News - Science & Environment
Nasa space lasers track melting of Earth’s ice sheets
US space agency satellites follow the melting trends in Antarctica and Greenland over 16 years.
Antarctic meteorites yield global bombardment rate
UK scientists provide a new estimate for the amount of space rock falling to Earth each year.