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Bam! Meteorite bombardment created Earth’s oldest rocks

A new computer modeling study shows that – some 4 billion years ago – a barrage of incoming debris from space likely formed what we know today as Earth’s oldest rocks.

Happy Chinese Valentine’s Day, from Vega

One of the prettiest stories in all skylore surrounds this star. “On the 7th night of the 7th moon …” The legend sets the date of Chinese Valentine’s Day – the Qixi Festival – this year on August 17.

What’s causing Florida’s algae crisis? 5 questions answered

Red tides and a blue-green algae outbreak are fouling hundreds of miles of coast, killing fish and driving tourists from beaches. Some causes are natural, but human actions also play a role.

Astronomers find weird rogue world with wild auroras

This free-floating rogue planet – untethered to any star – has a magnetic field millions of times more powerful than Earth’s and auroras much more brilliant than our world’s northern lights.

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More favorite Perseid meteor shower photos

2018 has been an exceptional year for the Perseids. Wonderful photos are still coming in. Thanks to all who submitted!

Wow! Zoom to the Milky Way’s center

Decades of work have gone into probing the heart of our Milky Way galaxy. Click in for a video showing stars orbiting the 4-million-solar-mass black hole at our galaxy’s core.

61 Cygni is the Flying Star

61 Cygni isn’t bright. But it moves exceptionally rapidly against the background of more distant stars. Its motion reveals its nearness to Earth.

Was the outer solar system shaped by a stellar fly-by?

Computer modeling suggests that – billions of years ago, when our solar system was young – a star swept near, stealing some of our sun’s material and creating the odd orbits of Kuiper Belt objects.

Perseid meteor shower: All you need to know

Some believe that Monday morning – August 13 – will be the best morning for 2018’s Perseid meteor shower.

Want to trick your ears?

You’ll enjoy this video of audio illusions from the guys at AsapSCIENCE. Can you understand the talking piano?

Jupiter’s moon Ganymede has powerful chorus waves

Chorus waves can be converted to sound. The ones around Earth sound like singing or chirping birds. Jupiter has stronger chorus waves, and now its large moon – Ganymede – has been found to have chorus waves a million times stronger than Jupiter’s.

The unique elephant brain

Today is World Elephant Day. Here’s a look at how unique brain structures – different from those of any other mammal – are responsible for elephants’ special abilities in learning and memory.

A spacecraft to touch the sun

Launch of the daredevil Parker Solar Probe – which will get closer to the sun than any spacecraft in human history – has been delayed until Sunday, August 12.