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Search results for planetesimals

Astronomy Jan 5, 2015

Rogue star HIP 85605 on collision course with our solar system, but Earthlings need not worry

It's known as HIP 85605, one of two stars that make up a binary in the Hercules constellation roughly 16 light years away. And if a recent research paper produced by Dr. Coryn Bailer-Jones of the Max Planck Institute for ...

Space Exploration Dec 19, 2014

After Rosetta, Japanese mission aims for an asteroid in search of origins of Earth's water

The European Space Agency's Rosetta mission to land on comet 67P was one of the most audacious in space history. The idea of landing on a small chunk of icy rock 300m kilometres away from Earth and hurtling towards the sun ...

Astronomy Dec 11, 2014

Swarms of Pluto-size objects kick-up dust around adolescent Sun-like star

Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) may have detected the dusty hallmarks of an entire family of Pluto-size objects swarming around an adolescent version of our own Sun.

Space Exploration Dec 2, 2014

Study finds a barrage of small impacts likely erased much of the Earth's primordial atmosphere

Today's atmosphere likely bears little trace of its primordial self: Geochemical evidence suggests that Earth's atmosphere may have been completely obliterated at least twice since its formation more than 4 billion years ...

Astronomy Nov 3, 2014

Very Large Telescope Interferometer detects exozodiacal light

By using the full power of the Very Large Telescope Interferometer an international team of astronomers has discovered exozodiacal light close to the habitable zones around nine nearby stars. This light is starlight reflected ...

Astronomy Jul 24, 2014

Highest-precision measurement of water in planet outside the solar system

A team of astronomers using NASA's Hubble Space Telescope have gone looking for water vapour in the atmospheres of three planets orbiting stars similar to the Sun – and have come up nearly dry.

Space Exploration Jul 7, 2014

Simulations show Mercury may have been victim of hit-and-run collision

(Âé¶¹ÒùÔº) —A pair of researchers with Arizona State University has created computer simulations that show that Mercury may have a relatively large metal core because it was the victim of a hit-and-run collision with another ...

Astronomy Jun 6, 2014

Researchers find evidence of speedy core formation in solar system planetesimals

(Âé¶¹ÒùÔº) —A combined team of researchers from Germany, Switzerland and the U.S. has found evidence of faster than thought core formation of planetesimals in our solar system. In their paper published in the journal Science, ...

Earth Sciences Apr 30, 2014

How life could have produced most minerals on Earth

While astronomers are trying to figure out which planets they find are habitable, there are a range of things to consider. How close are they to their parent star? What are their atmospheres made of? And once those answers ...

Astronomy Apr 29, 2014

What steps are needed to find more earths?

It wasn't so long ago that we found out there is an Earth-sized planet in a habitable zone of a star. But how many others are out there, and do we know if planets like this are truly habitable?

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