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The Day the Earth Smiled
A mosaic of people on Earth waving at Saturn on July 19, 2013, the day Earth smiled. NASA called it "a global moment of cosmic self-awareness."
July 19, 2017
Moon and Venus closest July 20
Around the world before sunrise Thursday, the moon and Venus will be close in the east before dawn. The bright star nearby is Aldebaran in Taurus the Bull.
July 19, 2017
Have you seen the Mayak satellite?
On July 14, an amateur group in Russia launched a small satellite called Mayak. They said it would become the "brightest shooting star" in the sky. Why'd they do it? Here's how to look for it.
July 18, 2017
Fire ants build with no master plan
Researchers identified simple behavioral rules that allow these tiny creatures to collaboratively build elaborate structures - rafts and towers - with no one in charge.
July 18, 2017
Venus, moon, Aldebaran before dawn
Look in the east for the brightest starlike object in the sky. That'll be Venus. Aldebaran is the bright star nearby. The moon will be passing through the next few mornings!
July 18, 2017
Rainbow and road
Photo by Mike Taylor, who is based in Maine. He calls this photo Innuendo.
July 17, 2017
Soar over Pluto and Charon
To celebrate the 2-year anniversary of New Horizon's flyover of the Pluto system, NASA released these 2 cool videos. Sail over the surface of Pluto and its large moon Charon.
July 17, 2017
Moon shadow versus sun reflection
This 5-second video shows a reflected image of the sun - a sun glint - as a bright spot crossing Earth from right to left. It also shows a dark spot - the moon's shadow - moving the opposite way.
July 17, 2017
Does your dog pronk?
Among wild animals, pronking may be a way of avoiding predators. But when you see an animal pronk, you can't but think it's leaping for joy.
July 17, 2017
Watch for Venus and Aldebaran
You can't miss the star right next to brilliant planet Venus, in the east before dawn now. It's Aldebaran, the Eye of the Bull in the constellation Taurus.
July 16, 2017
