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Possible iridium flare via Simon Waldram

I saw a flash in the night sky. What is it?

We can’t always say for sure what you saw in the night sky. But it might have been a flare from an iridium satellite.

Image from live webcam - April 26, 2016 - of the James Webb Space Telescope, now under construction at Goddard Space Flight Center.

Watch the Webb get its instruments

This new space telescope is expected to revolutionize our view of the cosmos, much as its predecessor the Hubble Space Telescope did.

perpetual ocean

Experience a perpetual ocean

In honor of World Ocean Day on June 8, a beautiful video visualization of ocean currents around the world.


Humans domesticated dogs twice, says study

New research suggests that dogs were domesticated not once, but twice, in different parts of the world.


Watch ISS’s newest module expand

Astronauts in orbit aboard ISS spent more than 7 hours on Saturday filling the new BEAM module with air. Check out this 25-second timelapse.


Four mini-Neptunes orbiting in lock step

For every three orbits of the outermost planet orbiting the star Kepler-223, the second planet orbits four times, the third six and the innermost eight.


Best close-up of Pluto’s surface

The most detailed view of Pluto’s terrain you’ll see for a very long time, taken by the New Horizons spacecraft as it flew past Pluto on July 14, 2015.

Image via NASA

Solar storms key to life on Earth?

Energy from our young sun – 4 billion years ago – helped create molecules in Earth’s atmosphere that allowed it to warm up enough to incubate life, says study.

A view of Mercury’s northern volcanic plains is shown in enhanced color to emphasize different types of rocks on Mercury’s surface. In the bottom right portion of the image, the 181-mile- (291-kilometer)-diameter Mendelssohn impact basin, named after the German composer, appears to have been once nearly filled with lava. Toward the bottom left portion of the image, large wrinkle ridges, formed during lava cooling, are visible. Also in this region, the circular rims of impact craters buried by the lava can be identified. Near the top of the image, the bright orange region shows the location of a volcanic vent. Image credit: NASA/JHUAPL/Carnegie Institution of Washington

New look at Mercury’s peaks and valleys

First global topographic map of Mercury shows the whole surface of our solar system’s innermost planet. MESSENGER mission scientists used 100,000 images to create it.


Ride along as a rocket lands

A rocketcam gives you a ringside seat on the view from space, as Blue Origin’s New Shepard rocket plummets earthward for an upright landing.