Space

UFO sightings: the science © iStock

UFO sightings: the science

Why does the Moon appear white and the Sun yellow? © Getty Images

Why does the Moon appear white and the Sun yellow?

Could there be planets out in space that are irregular shapes? © Getty Images

Could there be planets out in space that are irregular shapes?

Without all the empty space, how big would the Universe be? © Getty Images

Without all the empty space, how big would the Universe be?

Are there really still human footprints on the Moon?

Are there really still human footprints on the Moon?

Milky Way with zooming technique, Atacama desert, Chile © Getty Images

How do we know what the Milky Way looks like?

Mining space - what's up there? © Getty Images

Mining space – what’s up there?

Could it ever snow on Mars? © Getty Images

Could it ever snow on Mars?

How close could a living thing get to the Sun? © iStock

How do we know the temperature at the centre of the Sun?

Death stars © iStock

Death stars

What would a death star do to Earth? © Getty Images

What would a death star do to Earth?

Could there be an unseen planet on the other side of the Sun? © Getty Images

Could there be an unseen planet on the other side of the Sun?

Is alcohol as dangerous as smoking? © Getty Images

Is alcohol as dangerous as smoking?

Alien planets factfile © Getty Images

Alien planets factfile

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Stephen Hawking and alien invasions