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

° '
° '
The Black Holes Collection

The discovery, physics, & mergers that contribute to black holes.

Cosmos
Learn about our place in the universe.

ASYMO1020_04
See Mars at its best
Give yourself an early Halloween treat this year by spending some quality time observing Mars at opposition. Read more >>>
Venuscloudslife
Life in the clouds of Venus?
Astronomers spy phosphine in the weird atmosphere of Venus, a potential sign of life. Read more >>>
SpaceX loses first Starship prototype

The company will move forward with other prototypes.  Read more >>>
Moon Village:
Humanity's first step toward a lunar colony?
Read more >>>
starmus6pr
STARMUS VI: 50 years on Mars
In September 2021, Armenia will showcase the world’s great scientific minds and rock star talent in celebration of Mars exploration.  Learn more >>>
NEOWISEobserverschriscook
Comet NEOWISE springs a naked-eye surprise

Comet C/2020 F3 (NEOWISE) has joined the party.  View our Comet NEOWISE photo gallery >>>

Star Atlas
Observer's Handbook 2021 is the essential reference 
for everyone who enjoys the night sky.


Inside star cities

Watch editor David J. Eicher introduce his latest book on galaxies, or order now!

"Mars Underground"

How a group of students sparked a return to the Red Planet. 

Read more >>>

Martian stargazing

Dark, dusty skies.

Watch now >>>

asteroid_Earth_1
The hunt for dangerous asteroids continues
More than 100 of Earth's best telescopes have closed due to COVID-19. But key asteroid detection efforts remain online. Read more >>>
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 >>>
startrails894500_1280
The Degenerate Era

When the last stars die, the cosmos will turn into a drab place, with smoldering stellar remnants fading from sight like cooling embers.

Read more >>>
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 >>

Sunfilaments
Zooming in on the Sun

New ultra-high-resolution images reveal previously invisible filaments of million-degree plasma threaded through the Sun's atmosphere.  Read more >>>

Astronomy Exclusive

Explore the red planet's 36 greatest features with this flashcard set.

Disappearing Moon

Without our satellite, the planet would wobble, dramatically affecting seasons and climate.

Read More >>>

BlackHoleArtists
'It's a haunting thing'

Space artists discuss the first black hole image.

Read more >>

See Mars at its best

Give yourself an early Halloween treat this year by spending some quality time observing Mars at opposition. Read more >>>

PICTURE OF THE DAYsee all »

Sailing away

The Sailboat Cluster, also known as NGC 225, lies in the constellation Cassiopeia the Queen. It lies approximately 2,100 light-years from Earth.
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