Enjoying EarthSky? Subscribe.

125,960 subscribers and counting ...


The yin-yang of sea ice at Earth’s poles

As our world warms, Arctic sea ice is decreasing. But Antarctic sea ice is at an all-time high. How can that be? Here’s a 3-minute video that offers an explanation.

Does this Martian meteorite contain traces of life?

The Tissint meteorite, a martian rock which landed on Earth in July 2011, may contain proof of ancient life on Mars, according to a new study by an international team of scientists published in the December 1, 2014 issue of the journal Meteoritics and Planetary Sciences.

Video: Astrophysicists discuss the film Interstellar

A fun Google+ hangout on the science of the blockbuster film “Interstellar.” Three astrophysicists answered viewers’ questions about black holes, worm holes, exoplanets, time dilation, and more, separating the movie’s science facts from its science fiction. It’s fascinating stuff. Enjoy!

Animation shows Venus in evening sky late 2014 and 2015

Larry Koehn of the wonderful website shadowandsubstance.com dropped us a note today about his newest astronomy animation. It shows the much-anticipated upcoming apparition of the sky’s brightest planet – Venus – in the evening sky in late 2014 and 2015.

Video: Young volcanos on the moon

Scientists have long thought the moon’s volcanos stopped erupting a billion years ago. But dotting the lunar landscape are some remarkably fresh volcanic features.

Video: A year in the life of Earth’s CO2

NASA Goddard released this video on November 17, 2014. It’s based on an ultra-high-resolution NASA computer model showing how carbon dioxide in Earth’s atmosphere – a greenhouse gas – travels around the globe.

Hummingbird flies more like insect than bird, says study

You might think a hummingbird simply beats its wings so fast and hard it pushes down enough air to keep its small body afloat. Turns out it’s much trickier than that.

Video: Could humans actually live on planet Mars?

Could we survive on Mars? The AsapSCIENCE guys address the question.

Video: Astronauts put GoPro in floating water ball

Watch three astronauts aboard the ISS having fun with a GoPro and a floating ball of water.

Stunning video of twin waterspouts off Ligurian coast, Italy

The BBC News has posted footage of the moment two waterspouts appeared simultaneously off the coast of Liguria, Italy. The natural phenomenon occurred on November 6, 2014 during a thunderstorm.