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

° '
° '
ScreenShot20181231at1.28.36PM

New Horizons at Ultima Thule

NASA's New Horizons probe survived its New Year's Eve flyby of a "cosmic snowman."

Read more >>>

50 years later: Apollo 8

Jim Lovell relives the first Moon trip.

Read more >>>

Holiday Gift Guide

Watch our exclusive video for great gift ideas this Holiday season.

Watch now >>>

tripsslider

Take a trip you'll never forget!

With a range of exciting adventures to choose from, you're sure to find a trip that's perfect for you.  Explore trips now >>>
PIA10231_hires2

Astronomy for kids

Find out what it's like on other planets, learn how far away the stars are, or try a fun, space-themed project from our Astronomy for Kids page!
Go now >>>
2012GAU_Banner_Slider_ASY

Join us!

On December 5, 2020, join us as we set sail for 15 days aboard our privately chartered cruise ship. Learn more >>

Superflares

Life near small, violent stars.

Learn more >>>

Calling young astronomers

100 pages of fun articles, photos, puzzles, games, activities, and more!

Order Now »

BstarSlider

Meet the frozen super-Earth around Barnard's star

Just six light-years from Earth, the second-closest star system to our Sun hosts a planet at least three times the mass of our own.

Read more >>>

ASYDM1018_01copy

Discovering the dimmest galaxies

Astronomers see beyond the Milky Way’s glare into a hidden realm. Read more >>

50th Anniversary

Celebrate the program that landed Americans on the Moon!

Shop Now »

Phaethon

New look at a weird, blue rock.

Read more >>>

AstroInsightscometscopy

Sift through the debris of our solar system's formation

Explore our solar system's building blocks and find out everything you need to know about comets and asteroids in this free guide from Astronomy and Celestron. Get it here >>>
Apollo7Liftoff

50 years ago: Apollo 7

The first manned Apollo mission remains the most ambitious and successful test flight of any new flying machine ever. Read more >>>

Subscribe:

Subscribe today and get instant access to Astronomy's digital edition on your favorite devices!

Order now >>>

The Sky This Week

What's up in the night sky?

Read More >>>

maxgrav

Could humans live on a super-Earth?

What's the max gravity our bodies can survive?

Read more >>>
1905AZ_564x454_ASY

Join us!

Beneath Arizona's vast, clear skies you find some of most exciting astronomical destinations in the world. Learn more >>

New Horizons at Ultima Thule

NASA's New Horizons probe survived its New Year's Eve flyby of a "cosmic snowman."

Read more >>>

ADVERTISEMENT

FREE EMAIL NEWSLETTER

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

ADVERTISEMENT
ADVERTISEMENT