Bonus content

Enjoy this month’s selection of bonus content

Eye on the sky

Our roundup of this month’s best images from the world’s best telescopes

Significant rise in light pollution

Number of stars visible by eye has dropped by 10 percent in a decade

JWST confirms its first exoplanet

New world is almost exactly the same size as Earth

Tim Peake retires from active duty

The astronaut will dedicate his time to outreach and education

Distant radio galaxy observed for the first time

Signals from the galaxy have been travelling for 8.8 billion years

News in brief

A brief roundup of the latest astronomy news

Milky Way is special after all

Simulations suggest our Galaxy is surprisingly massive

Close black holes lie side by side

A pair of black holes have been discovered that are closer together than any pair previously observed

Io’s molten heart

Jupiter’s moon probably has a magma ocean, rather than a spongy centre