Asgardia's 1st satellite - Asgardia-1 - will launch aboard a NASA mission to ISS later this summer. "Asgardians" are invited to send their personal data - a photo or a file of their choosing – to space with it.

Expert analysis showing how many people - and how much traffic congestion - can be expected along the path of the August 21, 2017 total solar eclipse.

When two heavenly bodies seem to come together: EarthSky community member Tom Wildoner explains the term "conjunction" in astronomy.

Ongoing drought - and increasing temperatures - have reduced water flow in the Colorado River, with more dramatic reductions expected. This ongoing, unprecedented event threatens water supplies in cities in the U.S. West and some of the most productive agricultural lands anywhere in the world.

Featured in National Geographic and Nature, Canadian amateur astronomer Christian Sasse explains how he created his unique star trails, by superimposing images.

Albert Einstein hypothesized these ripples in the fabric of space-time a century ago. Now scientists have detected them for the 3rd time, from distant black hole collisions.

More tornadoes occur in the U.S. than any other country, mainly in the Great Plains, Midwest and southern states. Two meteorology professors answer questions.

When astronomers aimed the Very Large Array at the well-studied galaxy Cygnus A, they were surprised to find a bright new object near the galaxy’s core. Supernova explosion, or a second supermassive black hole?

Happening now in Denmark: "bright nights," when the sun is never far below the horizon. Photographer and videographer Adrien Mauduit tells the story and provides stunning imagery.

New data on the massive molten lake on Jupiter's moon Io - most volcanically active world in our solar system - suggest 2 lava waves per day, slowly sweeping west to east.