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Molecular clocks track human evolution
How do scientists figure out when evolutionary events happened? It turns out our DNA is a kind of molecular clock, keeping time via genetic changes.
April 9, 2017
Rescuing 11 elephants from a mud hole
Asian elephants got stuck in a mud-filled old bomb crater in Cambodia. A collaborative rescue effort saved them all.
April 8, 2017
Use zip code to attract birds to your yard
Audubon website lets you enter your zip code to see a list of the best bird-friendly plants for your yard. Plus a free app to identify the birds you see.
April 6, 2017
Close pass from asteroid 2017 GM!
Asteroid 2017 GM is one of the 10 closest asteroids known so far to sweep past Earth, and then keep going. At its closest, it was less than 1/20th of the moon's mean distance.
April 4, 2017
Asteroid close encounter on April 2
The near-Earth asteroid 2017 FU102 has a very close, but safe, encounter with Earth on April 2, 2017, sweeping to within just over half the moon's distance.
April 2, 2017
Watch Thursday’s spacewalk
Two ISS astronauts will be outside the space station beginning about 8 a.m. EDT (12:00 UTC) on March 30. The spacewalk is expected to last about 6.5 hours. Links to live viewing here.
March 30, 2017
Watch SpaceX rocket launch Thursday
The launch window for the reused - "flight proven" - Falcon 9 rocket opens at 18:27 EDT (22:27 UTC) on March 30. There's a two-and-a-half-hour launch window. Links to the live launch here.
March 30, 2017
Watch a full rotation of the moon
Wonderful video from the Lunar Reconnaissance Orbiter, a NASA spacecraft in a polar orbit around the moon since 2009. The moon as you've never seen it!
March 28, 2017
Another Planet 9 search! You can help
This one will use images of the sky visible from Earth's Southern Hemisphere. You can help from anyplace on the globe. The search is for a 9th major planet in our system, nicknamed Planet 9.
March 27, 2017
7 Earth-sized worlds? What we really see
A reality check from astrophysicist Brian Koberlein on what we actually see of the 7 recently discovered Earth-sized planets orbiting the star TRAPPIST-1.
March 21, 2017
