Related topics: dark matter · nasa · galaxies · solar system

New insights into the Earth's formation

Although the Earth has long been studied in detail, some fundamental questions still have to be answered. One of them concerns the formation of our planet, about whose beginnings researchers are still unclear. An international ...

Does the Milky Way's supermassive black hole have a companion?

At the heart of our galaxy, there is a monster black hole. Known as Sagittarius A*, it has a mass of 4.2 million suns, and it's only about 27,000 light-years from Earth. Sag A* is the closest supermassive black hole, and ...

New analysis explains formation of bulge on farside of moon

(PhysOrg.com) -- A bulge of elevated topography on the farside of the moon--known as the lunar farside highlands--has defied explanation for decades. But a new study led by researchers at the University of California, Santa ...

Are astronauts really weightless?

Hey look! It's a montage of adorable astronauts engaging in hilarious space stuff in zero gravity. Look at them throwing bananas, playing Bowie songs, drinking floating juice balls, and generally having a gay old time in ...

Explainer: How do satellites orbit the Earth?

Take a look at the moon and it isn't hard to imagine it as a planet. A 3,476 kilometres-in-diameter ball of rock, with basalt plains and mountain ranges, whose gravitational pull produces tides here on Earth.

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