Astronomy

Sunspot AR3664, over 15 Earths wide, has unleashed its most powerful solar flare yet. Watch it erupt from the sun in this awesome video.

Week in images: 06-10 May 2024

Discover our week through the lens

Heavy, prolonged or painful menstrual periods are associated with more days off school and scoring worse on compulsory exams in a UK study

Heavy, prolonged or painful menstrual periods are associated with more days off school and scoring worse on compulsory exams in a UK study

A review of Netflix's new 12-episode dystopian sci-fi series, "Goodbye Earth."

Three factors determine whether a society experiences disease outbreaks—and how we can fight them

A centuries-old maths problem asks what shape a circle traces out as it rolls along a line. The answer, dubbed a “cycloid”, turns out to have applications in a variety of scientific fields

A centuries-old maths problem asks what shape a circle traces out as it rolls along a line. The answer, dubbed a “cycloid”, turns out to have applications in a variety of scientific fields

Despite their resemblance to

The spacecraft XRISM has examined light from a distant galaxy that houses a supermassive black hole to determine the fate of matter in the void's gravitational thrall.

More huge cities are facing Day Zero—the date water taps go dry—just as Cape Town, South Africa, did

An exploding star is a catastrophe on a cosmic scale, but here on Earth we’re safe from such astral disasters—for now

By retrieving rare volcanic samples from the lunar far side, Chang'e-6 aims to provide answers as to why volcanism was so limited on just one side of the moon.

With a bit of training, macaques can make rhythmic movements in time with music, an ability only shown before by a handful of animals

With a bit of training, macaques can make rhythmic movements in time with music, an ability only shown before by a handful of animals

The waxing Moon this week travels eastward from the horns of Taurus past the heads of Gemini, the Beehive in Cancer, then the forefoot of Leo on its way to occulting Beta Virginis.

The post This Week's Sky at a Glance, May 10 – 19 appeared first on Sky & Telescope.

Image: This Copernicus Sentinel-2 image features salt flats and lakes in southwest Bolivia, near the crest of the Andes Mountains.

People who can run a mile in less than 4 minutes generally live almost five years longer than would otherwise be expected, challenging the idea that too much strenuous exercise is bad for the heart

People who can run a mile in less than 4 minutes generally live almost five years longer than would otherwise be expected, challenging the idea that too much strenuous exercise is bad for the heart

The NOAA has bumped up its geomagnetic storm watch for May 11 to a "rare" level as solar activity continues at high levels and at least four coronal mass ejections propel toward Earth.