Paul Scott Anderson
Hexagonal dune field on Mars.

Weird hexagonal dune field seen on Mars

Mars has sand dunes, as Earth does. But now, NASA’s Odyssey orbiter has revealed something odd: a large dune field shaped roughly like a hexagon. The finding is expected to provide more clues as to how dunes form in Martian winds.

A solar flare 10 billion times more powerful than sun’s

Our sun’s solar flares are an incredible natural phenomenon, but now astronomers have observed a flare on a young star that almost defies belief. It’s 10 billion times more powerful than any seen on our sun!

South polar ice cap on Mars.

Volcanic activity under Mars’s surface?

Mars has long been thought to be a geologically dead world. Could there still be volcanic activity beneath its surface? A subsurface lake at Mars’ south pole suggests that possibility.

Storms on Uranus and Neptune seen by Hubble.

New Hubble images show storms on Uranus and Neptune

Uranus and Neptune – the ice giants of the solar system – are distant worlds last visited by the Voyager 2 spacecraft in the late 1980s. But the Hubble Space Telescope is still keeping an eye on them and their dynamic atmospheres.

See China’s Chang’e 4 on moon’s far side

China’s Chang’e 4 lander has produced fantastic, 1st-time surface views of the far side of the moon. Now a NASA orbiter has caught images of the landing site.

Computer simulation of two colliding planets.

A tale of 2 colliding exoplanets

Astronomers have new evidence for a collision between 2 nearly Earth-sized planets in the distant solar system Kepler-107.

Blue and green colors in Earth's oceans.

Much of Earth’s surface ocean will shift in color by end of 21st century

A new MIT study shows how changing colors of Earth’s oceans can be used to monitor climate change in the relatively near future.

Fireworks over Shanghai, China, with artificial meteors in the sky.

A plan to create artificial meteors

Everyone loves a good meteor shower, but what about an artificial one? A Japanese company plans to create one and has just launched hundreds of pellets to space. They’ll ultimately rain down again in colorful displays.

Is this ancient moon rock from Earth?

An intriguing ancient rock found on the moon and brought back by the Apollo 14 mission may actually have originated from Earth, a new study says.

How Titan cooked its atmosphere

Saturn’s largest moon Titan has a thick nitrogen atmosphere – unique among all the moons in the solar system. A new study suggests Titan’s atmosphere originated from organics being “cooked” in its interior.

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