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

° '
° '

Astronomy's year was 2009

You could call it "astronomy's birthday party."
International Year of Astronomy 2009
The International Year of Astronomy marks the 400th anniversary of Galileo's use of a telescope to observe the skies.
IYA2009
The entire year of 2009 marked the astronomy world's big celebration. The International Year of Astronomy (IYA2009) celebrated Galileo Galilei's first telescopic observations of the night sky, which happened 400 years prior.

Already a subscriber? Register now!

Registration is FREE and takes only a few seconds to complete. If you are already registered on Astronomy.com, please log in below.
ADVERTISEMENT

FREE EMAIL NEWSLETTER

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

ADVERTISEMENT
ADVERTISEMENT
BoxProductcovernov

Click here to receive a FREE e-Guide exclusively from Astronomy magazine.

Find us on Facebook

Loading...