Mountain, lake and blue sky.

Plastic rain: More than 1,000 tons of microplastic rain onto western US

New research finds that microplastics are emitted into the atmosphere.

Photo of stars above the Sahara

Will large parts of Earth be too hot for people in 50 years?

Inhospitably hot regions on Earth occupy about 0.8% of the globe now. New research indicates that – if greenhouse gas emissions continue unabated – these regions may expand to something more like 19% by 2070.

People on a stage singing with open books.

Covid-19 spreads through the air. That’s a big challenge for reopening

Clear, straightforward information on how a virus spreads, from a scientist who studies infectious disease

Celebrate solstice sunrise at Stonehenge live online

This year, solstice celebrations at Stonehenge monument are canceled due to Covid-19. But for the 1st time, you can celebrate the 1st sunrise of summer from Stonehenge online.

A rounded field of view, with the sun obscured behind a disk to mask its brightness, and 2 small comets (with short visible tails) moving near the sun.

SOHO’s 4,000th comet

This week, a citizen scientist spotted a never-before-seen comet in data from the sun-observing SOHO spacecraft. It was SOHO’s 4,000th comet discovery. Learn more and watch comets sweep near the sun in this video.

Woman with headphones in cockpit.

Sally Ride: 1st American woman in space

Ride was the 1st American woman to go to space, flying on the STS-7 space shuttle Challenger mission in 1983, and later on another mission in 1984.

Artist's colored drawing of 3 balls, appearing to orbit each other. One ball, the pulsar has jets extending from either pole. Below them, a mesh-like structure indicates the amount of space they each curve.

Dance of 3 stars confirms Einstein’s ‘most fortunate thought’

Researchers in Europe have now confirmed the universality of free fall – which Einstein called his most fortunate thought – with extremely high precision. To do it, they spent 8 years tracking a triple star system containing a millisecond pulsar.

Who was the 1st woman in space?

On June 16, 1963, cosmonaut Valentina Tereshkova launched solo aboard a Soviet Vostok 6 rocket, becoming the first-ever woman in space.

A spacecraft, with what looks like a large camera "eye," with the sun in the background.

ESA’s Solar Orbiter made its 1st close approach to the sun on June 15

Solar Orbiter swept as close as 50 million miles (77 million km) to our sun’s surface. Now scientists are at work testing the spacecraft’s 10 science instruments, including the 6 telescopes on-board. New images, to be released in mid-July, will be the closest of the sun ever captured.

Artist's concept of people marching in a Black Lives Matter protest.

Scientists to strike on June 10 #ShutDownSTEM #Strike4BlackLives

EarthSky is joining the grassroots effort to #ShutDownSTEM and #Strike4BlackLives on Wednesday, June 10. Thousands of researchers around the world have pledged to pause their work on Wednesday to support the ongoing Black Lives Matter movement and efforts against racism in the scientific community and society at large.