Video still of April 6, 2019 meteor.

Another asteroid disintegrates over Russia

A bright meteor was caught in many dashcam videos – in broad daylight – on April 6, 2019, over the Russian city of Krasnoyarsk. See a video compilation here.

Identical twin male astronauts sitting next to each other.

Does a year in space make you older or younger?

The NASA Twins study – featuring astronaut twins Scott and Mark Kelly – was the perfect space experiment. Scott spent a year in space aboard the International Space Station. Mark remained on Earth. The results?

Check out this peregrine falcon webcam

An EarthSky community member – Jody Kuchar – alerted us to the webcam, which is based in Wisconsin. Thank you, Jody!

Black hole image confirms Einstein’s relativity theory

Einstein’s theory was confirmed in 1919, when British astronomer Sir Arthur Eddington measured the bending of starlight around the sun during a total solar eclipse. And it’s been re-confirmed since. How about now?

A reptile expert takes your burning dragon questions

As Game of Thrones returns for its final season, a herpetologist addresses some highly fictional dragon scenarios using real science.

A round crescent world and its moon, with a distant sun.

Vote to help name solar system’s largest unnamed body

2007 OR10 has one of the reddest surfaces ever found in our solar system’s distant Kuiper Belt. Vote to help decide between 3 possible official names.

Today in science: Bingham Canyon landslide

On April 10, 2013, one of the largest non-volcanic landslides in the history of North America took place at the Bingham Canyon mine in Utah.

What causes landslides and mudslides?

The trigger is usually water. Excessive rainfall can trigger landslides and mudslides because it’s heavy and adds extra weight to the land.

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.

2018 global CO2 growth 4th highest on record

According to NOAA data, global growth in atmospheric carbon dioxide (CO2) in 2018 was the 4th-highest in 60 years of record-keeping.