Space

Atlantis launch cleared as ISS has close shave

Astronomer expects alien encounters “within twenty years”

Asteroid set for near-miss today

Moon tape recovered after forty years

Sun and planets built of different materials

Liquid oceans on Enceladus imply it could sustain life

Massive cosmic car crash revealed

Space freighter plunges into southern Pacific

Cassini images throw light on Saturnian moon

Comet is 'hyperactive' say astronomers