Subscription Center
The Andromeda Galaxy, a spiral galaxy 2.5 million light-years away, is something of a big sister to our own Milky Way. Andromeda contains roughly a trillion stars, a few times more than the Milky Way, but as the nearest major galaxy and the nearest spiral, it is useful for studying the structure of galaxies like our own. (Since astronomers are deeply embedded in the Milky Way, it is difficult to make comprehensive measurements of our home universe.)
NASA launched the Wide-field Infrared Survey Explorer, or WISE, in December to map the sky in infrared wavelengths. The spacecraft has already discovered a new asteroid and comet near Earth, and on Wednesday the space agency released a series of images WISE has captured of known astronomical objects. In this infrared image of Andromeda, bluer light represents stars, which give off a great deal of heat, whereas redder hues mark cooler regions, such as dusty wisps within the galaxy. The blue lobe below the galactic disk is Messier 110, an elliptical galaxy that is one of Andromeda's many satellites.
See what we're tweeting about
BoraZ Croatia’s research is ‘unsatisfactory’ and dogged by challenges, says science minister http://t.co/gS5bLP4iAh
Dhunterauthor Skepchick | Happy Graduation, Men! http://t.co/m5etBUJ5rI Dhunterauthor Call Me Crazy, But... http://t.co/GK8hD9o8Hp
Deadline: Jul 15 2013
Reward: $5,000 USD
SciBX: Science-Business eXchange, a joint publication from the makers
Deadline: Jul 25 2013
Reward: Varies
This challenge provides an opportunity for Solvers to build a web-based or mobile “app” to explore data relationships in scholarly conte
Powered By: 
YES! Send me a free issue of Scientific American with no obligation to continue the subscription. If I like it, I will be billed for the one-year subscription.
13 Comments
Add CommentSo this is where Dark Matter was 'discovered' in the late 1960s. Still nothing in infrared...
Reply | Report Abuse | Link to thisHow can we wait for million years to reach this galaxy by our mattercraft?Why don't we reach there by our awareness?Some one had said about this 2553 years ago but some under stand.It so hard to tell anyone about elephant by word.That all !!!!! NIRVANA.....
Reply | Report Abuse | Link to thisSeriously?
Reply | Report Abuse | Link to thisSeriously?
Reply | Report Abuse | Link to thisI think kinda the point of Dark Matter is that it doesn't interact in the electromagnetic spectrum. Hence the "dark" part of it's name.
Reply | Report Abuse | Link to thisDawnshadow - That's what makes it so convenient. It was just a silly joke.
Reply | Report Abuse | Link to thisPlease refer to my essay on the actual cause of astronomers’ perceptions of gravitational anomalies, “Dark Matter as Gravitational Estimation Error”, and the resulting discussion attached to the article at:
http://www.scientificamerican.com/article.cfm?id=dark-matter-cdms
Spock isn't real
Reply | Report Abuse | Link to thisbtw, that's a pretty amazing photo
Reply | Report Abuse | Link to thisibtimmons - LOL!
Reply | Report Abuse | Link to thisReminds me of the Beatles:
Reply | Report Abuse | Link to this"There's nothing you can do that can't be done."
Stupid song.
Hello,
Reply | Report Abuse | Link to thisI have a question?Can mosquitos be used as bio-weapons
in the future?Is it possible to engineer a mosquito to have
CDT4 cells to act as hosts for the HIV virus?
Hello,
Reply | Report Abuse | Link to thisI have a question?Can mosquitos be used as bio-weapons
in the future?Is it possible to engineer a mosquito to have
CDT4 cells to act as hosts for the HIV virus?
and who says we are alone in the universe..
Reply | Report Abuse | Link to this