Tonight's Sky
Sun
Sun
Moon
Moon
Mercury
Mercury
Venus
Venus
Mars
Mars
Jupiter
Jupiter
Saturn
Saturn

Tonight's Sky — Change location

OR

Searching...

Tonight's Sky — Select location

Tonight's Sky — Enter coordinates

° '
° '
hs201427axlarge_web

Breaking News: The Universe is 10 times more vast than we thought

A new survey of the universe’s galaxy population concludes that previous estimates lowballed the census by a factor of about 20.

Our new Pluto globe is out of this world.

2011-2015 Issues

60 complete issues, 4 special issues, and more on DVD-ROM!

Order now »

centauri_slider

There's an Earth-mass, potentially habitable planet around Proxima Centauri

The newly-announced exoplanet is as close as you can get to our solar system without orbiting the Sun.
eclipse2_large

Prepare for totality

Find everything you need to know about the 2017 solar eclipse, all in one place. READ MORE>>

Fast radio burst "afterglow" is a black hole

The signal came from a galaxy's core, not the burst. Learn more »

ExoMars is on its way

The spacecraft will arrive in seven months to address Mars' unsolved mysteries.

Read more »

Astronomy Insights

A digital supplement to Astronomy magazine.
Read more »

Eclipse tour

A must-see sky event!

Join TravelQuest International with Astronomy and Discover magazines on one of three great tour options surrounding this celestial spectacle

View the brochure »

Instant delivery of every issue

New Planet 9?

If this giant world exists, it would be 10 times the mass of the Earth.

Learn more»

P25368_563x462

You'll find tons of useful tips, terms, product reviews, and more in our 5 part email series

Breaking News: The Universe is 10 times more vast than we thought

A new survey of the universe’s galaxy population concludes that previous estimates lowballed the census by a factor of about 20.
ADVERTISEMENT

FREE EMAIL NEWSLETTER

Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter.

ADVERTISEMENT
ADVERTISEMENT