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Born in March? Here’s your birthstone

Happy birthday to all you March babies. Your month has 2 birthstones – the aquamarine and the bloodstone.

When is the next leap year?

If there were no leap years, eventually February would be a summer month for the Northern Hemisphere. 2017 isn’t a leap year, but 2020 will be.

SpaceX to send 2 people around moon

SpaceX’s Elon Musk would not name the 2 private citizens who approached the company with an offer to pay for a flight around the moon and back.

Storm chasers honor Bill Paxton

An amazing several-state tribute – stretching across Tornado Alley – honoring Twister star Bill Paxton, who died Sunday due to complications from heart surgery.

20 years after Dolly

Everything you always wanted to know about the Dolly the cloned sheep and what came next, from a biomedical researcher and cloning expert.

What is the crater-dome illusion?

When you see spacecraft images of craters on other worlds, do you sometimes think they look like domes? Here’s how to change your perception.

When does the Age of Aquarius begin?

The Age of Aquarius starts when the vernal equinox point moves out of constellation Pisces and into Aquarius. When will that be? There’s no definitive answer.

Watch drone video of Falcon 9 landing

You’ve probably seen footage of rockets taking off, but here’s Falcon 9 returning to Earth and landing safely after its launch on Sunday.

Help astronomers look for Planet 9

There might be an unknown 9th planet that orbits far from Earth, on the outer fringes of our solar system. You can help astronomers find it, if it exists!

What is radiocarbon dating?

At a very steady rate, unstable carbon-14 gradually decays to carbon-12. The ratio of these carbon isotopes reveals the ages of some of Earth’s oldest inhabitants.

Watch SpaceX Dragon launch February 18

SpaceX is scheduled to launch its Dragon spacecraft resupply mission to the International Space Station no earlier than 10:01 a.m. EST (1501 UTC) on Saturday, February 18. How to watch.

Toxic pollutants persist in deepest ocean

Banned chemicals from the 1970s have been discovered in the bodies of crustaceans in the deepest of Earth’s ocean trenches.

Wow! 2017 underwater photo contest winners

Winners of the 2017 Underwater Photographer of the Year (UPY) contest. How do you choose a favorite?

The Science Love Song

Bizarrely heart-warming, from the guys at ASAPScience.

Slooh astronomers catch comet breakup

Will comet 73P/Schwassmann-Wachmann survive its March 16 sweep near the sun, or disintegrate into a trail of cosmic dust?

Round object crosses the moon

During Friday’s penumbral eclipse of the moon, an observer in Puerto Rico captured images of a black disk moving across the moon’s face.

Backyard Bird Count begins February 17

Looking for something fun to do this weekend? Why not join thousands of people from around the world in the 2017 Great Backyard Bird Count?

Today in science: Spacecraft destroys sundog

Coolest space launch ever! Watch what happened when a spacecraft launch destroyed a sundog, in the process bringing to light a new form of ice halo.

Full braking at Alpha Centauri

Space visionaries might have figured out a way to travel within decades to the nearest star system, Alpha Centauri. But, once we get there, how do we slow down?

What’s a Blood Moon?

Nowadays, 4 totally eclipsed moons in a row are called Blood Moons. Why? We don’t know for sure, but the answer may lie in a 2013 book by 2 Christian pastors.