Missions to the moon and Mars and a new space-based telescope are in the works for 2021, say Ian Whittaker and Gareth Dorrian.

Asteroid 16 Psyche is thought to be the leftover core of a would-be planet that fell apart.

NASA says the Hubble Space Telescope has been put into 'safe mode' due to problems with its pointing mechanism.

The potential moon would be considerably larger than Earth — about the size of Neptune or Uranus. The planet it orbits is as big as mammoth Jupiter.

NASA is adding to its list of weirdest planets in the known universe this week with the discovery of a super-hot world where sunscreen literally falls from the sky.

Thought the universe was crowded with 100 billion to 200 billion galaxies? Try 1 trillion or even 2 trillion galaxies and more.

The Hubble Space Telescope has spied what appear to be water plumes on one of Jupiter's icy moons shooting up as high as 200 kilometres.

For the first time since 1994, the Hubble Space Telescope has spotted a dark vortex on Neptune.

Astronomers using the Hubble Space Telescope have come across an interesting discovery: the universe is expanding five to nine per cent faster than expected.

Astronomers searching for life beyond our solar system may need to look no farther than a little, feeble nearby star.