Dr Alastair Gunn

Alastair is a radio astronomer at the Jodrell Bank Centre for Astrophysics at the University of Manchester.

Recent articles by Dr Alastair Gunn

Do black holes collapse? © Getty Images

Do black holes collapse?

Why is the Moon sometimes visible during the day? © Getty Images

Everyday science

Why is the Moon sometimes visible during the day?

Are black holes always found at the centre of galaxies? © Getty Images

Quick Q&A: What happens to the light that’s been sucked into a black hole?

Could ‘dark matter’ just be dead stars and planets floating in the depths of space? © Getty Images

Could ‘dark matter’ just be dead stars and planets floating in the depths of space?

How far do we travel through space every day? © Getty Images

How far do we travel through space every day?

Do objects in the Universe moving towards us show a blue shift? © Getty Images

Do objects in the Universe moving towards us show a blue shift?

How many extrasolar planets do we know about? © Getty Images

How far would we need to travel to leave our Galaxy?

How would our Solar System be different if Jupiter had been big enough to be a star? © NASA

How would our Solar System be different if Jupiter had been big enough to be a star?

Could we live on airships in the atmosphere of Venus? © Dan Bright

Could we live on airships in the atmosphere of Venus?

Could we launch plastic into space to reduce pollution on Earth? © Getty Images

Everyday science

Could we launch plastic into space to reduce pollution on Earth?

Is space a perfect vacuum? © Getty Images

Is space a perfect vacuum?

Could we reuse any ISS modules for a Mars mission? © NASA

Could we reuse any ISS modules for a Mars mission?

Are there any animals that prepare or cook their food? © Getty

Are there any animals that prepare or cook their food?

Where did the Big Bang take place? © Getty Images

If we made a powerful enough telescope, would we theoretically be able to see the light from the Big Bang?

Could we ever move a planet into a more habitable orbit? © Getty

Could we ever move a planet into a more habitable orbit?