Category: Space

What is airglow?

The science behind the phenomena that causes the sky to glow in a rainbow of colours (Image credit: European Southern Observatory) Airglow is a photochemical reaction in the Earth’s atmosphere caused by electronically excited...

Spotting near-Earth asteroids

Could you be the one who discovers the next asteroid making its way towards Earth? Searching the skies The night sky is already abundant with faint specks of light, but somewhere among them is...

Animal astronauts

Meet Laika – the first animal in orbit – and the other 9 space pioneering species that paved the way for human spaceflight.

Detecting life on Earth

To find life on other planets we may need to study our own Finding life on other worlds is one of the great endeavours of our time. We’ve found dozens of planets beyond our...

Heroes of Space: Tycho Brahe

Meet the man who coined the term ‘nova’ and calculated planetary motion before telescopes Few other naked-eye astronomers have plotted the movement of planets quite as accurately as Danish nobleman Tycho Brahe. His observations...

How do mountains form in space?

Everest has nothing on mighty peaks elsewhere in the Solar System… We marvel at Mount Everest, the highest peak on Earth at 8,848 metres (29,029 feet). Yet in comparison to some of the other...

Why is the Solar System flat?

How a matter-filled cloud turned into a flat, planetary system To find out why our Solar System is flat, we must first uncover its origins. Our Solar System formed from a huge, nebulous cloud...

What is the Perseid meteor shower?

Keep a look out for the annual meteor display that is hitting the sky. The Perseid meteor shower is one of amateur astronomy’s most awe-inspiring events. Every summer, from the middle of July to the end of...

The Solar System: What is a gravitational well?

How this invisible force shapes the universe While we are all familiar with gravity being the force that causes a dropped phone to clatter to the ground, Albert Einstein was the first to describe...