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House in night sky

Space

How to measure light pollution where you live by counting stars

If you're an urban stargazer it helps to know how much light pollution there is in your area. Here's a star-based test to find out

Regulars

Dust is annoying, but it is also key to life and death in the cosmos

Space

Dust is annoying, but it is also key to life and death in the cosmos

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How to find the North Star and Southern Cross

Space

How to find the North Star and Southern Cross

Regulars

A stargazer's guide to the equinox and how Earth moves around the sun

Space

A stargazer's guide to the equinox and how Earth moves around the sun

Regulars

Volcano on the surface of Io

Space

The most powerful volcano on Jupiter's moon Io is about to explode

News

How the coolest, smallest stars could help us discover new exoplanets

Technology

How the coolest, smallest stars could help us discover new exoplanets

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We just found dozens of missing galaxies from the early universe

Space

We just found dozens of missing galaxies from the early universe

News

Earth from space

Space

We could use Earth's atmosphere as a giant lens for a space telescope

News

Before building another telescope, learn from Hawaiian culture

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Before building another telescope, learn from Hawaiian culture

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Space

What happened when the Shoemaker-Levy 9 comet smashed into Jupiter

From the archives: In 1994 comet Shoemaker-Levy 9 hit Jupiter, creating fireballs 2000 kilometres across – and raising US Congress alarm about what would happen if one hit Earth

Regulars

Space

Two incredibly fast-orbiting stars seem to be the wrong temperature

News

Space

Strange stars that go supernova may be dimming because of dark matter

News

Space

Hawaii declares state of emergency amid protests over huge telescope

News

Space

There aren’t enough space explosions to explain strange radio bursts

News