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How can you know what to believe?

It’s not surprising that a new study linking extreme winter weather in the U.S. East with a warmer Arctic has drawn fire from global warming skeptics. Should you believe the study or the skeptics?

Where did Mars get its organic molecules?

New computer simulations indicate 1/3 of Mars’ organic molecules come from asteroids and comets.

Stunning Mars images, from Curiosity

The Curiosity rover has sent back some beautiful new images of the foothills of Mount Sharp in Gale crater on Mars.

New moon is March 17

New moon comes March 17, 2018, at 13:12 Universal Time. For many around the globe, the time of this young moon – and the season – signal a possible sighting of an extremely young moon on March 18.

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Calling all cloud-gazers! NASA needs your help

Take pictures of clouds to help scientists.

Hubble finds relic galaxy close to home

The Hubble Space Telescope looks at a very rare and odd assemblage of stars that has remained essentially unchanged for the past 10 billion years.

Why beware the Ides of March?

The Ides of March are March 15. We in modern times probably wouldn’t know about them, if it weren’t for William Shakespeare.

Pluto craft’s next target is Ultima Thule

New Horizons passed Pluto in 2015. With public input, the mission team has nicknamed the spacecraft’s next target – on the fringes of our solar system – Ultima Thule.

Mexico City earthquake was rare ‘bending’ quake

A new study on the 2017 quake that killed 300 in Mexico City finds that both its location and cause were unusual. But seismologists say it could happen again.

Happy birthday, Albert Einstein

Born on this date in 1879, Einstein changed our notions of space, time and matter – launched modern physics – and became a household name.

A peculiar galactic clash

This pair of barred spiral galaxies have just begun a magnificent merger.

Where’s the moon? Waning crescent

New moon is March 17. If you see the moon in the east before dawn Friday, it’ll be a very slender crescent.

The most inspirational space video, ever

Worried that our human species is making a mess of things? Inspiration-less? Carl Sagan wants to tell you something.