4-legged whale fossil found along coast of Peru

Fossil remains of a 4-legged whale with hooves suggest that this whale could walk on land. With a robust tail and webbed fingers, it might have propelled itself through water like an otter.

Curiosity rover captured 2 solar eclipses on Mars

Watch Mars’ moons Phobos and Deimos cross the sun in a pair of solar eclipses last month, in these animations made from images from the Curiosity rover’s cameras.

Alaska’s mountain glaciers: A 10-year story

Glaciers in Alaska are losing ice and contributing to sea level rise. To monitor these changes, a team of researchers has been flying scientific instruments on a bright red, single-engine plane since spring 2009.

Fungal disease killing off frogs, toads, salamanders worldwide

The disease, which eats away at the skin of amphibians, has completely wiped out 90 species and caused dramatic population declines in more than 500 more.

Line-drawing illustration of the passage of 2019 FC1.

Speedy asteroid buzzed Earth last week, 1 day before being detected

A small asteroid – now designated as 2019 FC1 – flew closer to us than the moon on March 28, 2019. Astronomers detected it 1 day later. It’s the largest of 14 asteroids to pass closer to us than the moon since 2019 began.

Robot particle disks.

Say hello to particle robots

Roboticists are fundamentally rethinking their craft. Particle robots don’t look like biological creatures, but they’re constructed like biological systems, vast in complexity and abilities, yet composed of simple parts. Are they a step toward the proverbial ‘gray goo’?

Astronomers clock super-fast pulsar speeding through space

The runaway pulsar escaped the blast wave of the supernova that formed it, astronomers say, and is hurtling through space so fast it could travel from Earth to the moon in just 6 minutes.

Storm in a cosmic teacup

Nicknamed the Teacup because of its shape, this quasar is causing a cosmic storm in a distant galaxy. The source of the squall is a supermassive black hole buried at a galaxy’s center.

A new species of killer whale?

In January, scientists captured footage of what might be a new species of killer whale near Antarctica.

Woot! 4,001 exoplanets and counting 

The Exoplanet Team, led by the Observatoire de Paris, announced this week that the list of known exoplanets – planets orbiting distant stars – has grown to 4,001!