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Watch for Mars and Spica before dawn
Now the view toward the east before dawn has entirely changed. Bright Jupiter is the 1st object you'll notice. Venus can only be seen very shortly before sunup. Mars and Spica are fainter, but close!
November 27, 2017
Say farewell to Venus
Did you see the conjunction of Venus and Jupiter before sunup around November 13? Since then, Jupiter has been climbing away from the sunrise, while Venus has been falling toward it.
November 26, 2017
Birdseye view of iceberg A-68A
The giant iceberg A-68A calved from Antarctica's Larsen C ice shelf. This photo shows part of iceberg’s edge and open water.
November 26, 2017
Moon near Neptune on November 26
You won't see Neptune in the moon's glare tonight, even with optical aid and a sky chart. Still, tonight’s moon can point the way for later this month.
November 26, 2017
Waving hi to ISS
Karthik Easvur created this image as the International Space Station soared over Hyderabad, India on November 22. How you can spot it. Plus, who's aboard ISS now?
November 25, 2017
Watch: Incredible hurricane visualization
Take 2 minutes to watch this stunning NASA timelapse showing sea salt, dust, and smoke flowing around Earth during 2017's active hurricane season.
November 24, 2017
Our nights are brighter, and brighter
The International Dark-Sky Association has campaigned for decades to reduce artificial light at night. Yet a new study shows our night skies still brightening at a rate of 2 percent each year.
November 24, 2017
Cloud-to-cloud shadow over China
One morning over Hong Kong, a striking shadow cast from one cloud to another. Photos by Cammy Li. Explanation by Matthew Chin.
November 24, 2017
Show friends and family 2 planets
The moon swept past it earlier this week, but it's still up there. In fact, Mercury is now near its greatest elongation, or farthest from the sunset for this evening apparition.
November 23, 2017
Do dolphins get Alzheimer’s disease?
In many ways, dolphin brains are a lot like human brains. Researchers report on pathological signs of Alzheimer’s in these awesome creatures.
November 22, 2017
