SpaceX Starship SN15 1st test flight scrubbed for Friday

Frday’s high-altitude test flight for the SpaceX Starship SN15 prototype was scrubbed possibly due to bad weather. When the test occurs, will SN15 meet the same explosive fate as 4 earlier SpaceX Starships? Stay tuned.

May 2021 guide to the bright planets

Mars is the only visible planet out after nightfall. You’ll find it descending in the west each evening in May 2021. Also watch for brilliant Venus and little Mercury low in the west, for a brief time after sunset. Bright Jupiter and ringed Saturn grace the morning sky.

How jellyfish swim

Check out the videos in this post to see the hypnotic pulse of swimming jellyfish. Their gentle movement belies a complex flow of water that make these creatures highly energy-efficient swimmers.

All you need to know: Eta Aquariid meteors

In 2021, the forecast calls for the greatest number of Eta Aquariid meteors to fall before dawn on May 5. But don’t discount May 4 or 6, either or both of which might provide a good sprinkling of meteors, too.

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Space rock found on Earth traced back to origins on Vesta

In 2018, a small asteroid crashed into Earth, and scientists recovered pieces of it in a Botswana game reserve. Now the scientists have determined the space rock’s origin: Vesta, in the asteroid belt.

What moves the sailing stones of Death Valley?

At Death Valley’s Racetrack Playa, some rocks show signs of movement, etching trails in the dry lake bed. It was an enduring mystery until quite recently.

Warmer ocean temperatures may decrease Saharan dust crossing the Atlantic

Every year millions of tons of dust from the Sahara Desert are swirled up into the atmosphere and carried across the Atlantic. Research suggests that, as the climate changes, Saharan dust transport will decrease.

Radio waves from famous FRB surprisingly long and late

Astronomers have managed to detect very long wavelength radio emission from a well-studied, repeating fast radio burst, called FRB 20180916B. What’s more, the longer wavelengths arrive 3 days after the shorter wavelength counterpart of the signal! Why?

Climate has shifted axis of Earth, says study

New research suggests that loss of water on land through ice melting and human-caused factors is changing the movement of Earth’s North and South Poles.

Photos of the supermoon, April 2021

The first of 2 spring supermoons in 2021 took place on April 26 or 27 (depending on your location on Earth). We received many wonderful submissions from you, our readers. Here’s a gallery of some favorites. Thanks to all who submitted!

See 2 black holes in cosmic dance

NASA has released a cool new visualization showing two massive black holes orbiting each other in a stunning display of light. The intense gravity and other phenomena all play a part in producing this mesmerizing display. Watch here.

Expect flooding from this week’s supermoon, but know a lunar cycle masks effects of sea level rise

The April 2021 supermoon and the lunar nodal cycle, explained.

You can help map the emerging cicadas

Go on a safari this spring to help scientists map the 17-year periodical cicadas known as Brood X that are emerging in the weeks ahead.