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Search results for planetesimals

Astronomy Aug 28, 2018

Jupiter had growth disorders

Researchers of the Universities of Bern and Zürich and of ETH Zürich show how Jupiter was formed. Data collected from meteorites had indicated that the growth of the giant planet was delayed for 2 million years. Now, the ...

Astronomy Aug 16, 2018

Oort clouds around other stars should be visible in the cosmic microwave background

For decades, scientists have theorized that beyond the edge of the solar system, at a distance of up to 50,000 AU (0.79 ly) from the sun, there lies a massive cloud of icy planetesimals known as the Oort Cloud. Named in honor ...

Space Exploration Aug 2, 2018

Researchers uncover remnants of early solar system (Update)

Scientists believe the solar system was formed some 4.6 billion years ago when a cloud of gas and dust collapsed under gravity possibly triggered by a cataclysmic explosion from a nearby massive star or supernova. As this ...

Astronomy Jul 18, 2018

X-ray data may be first evidence of a star devouring a planet

For nearly a century, astronomers have puzzled over the curious variability of young stars residing in the Taurus-Auriga constellation some 450 light years from Earth. One star in particular has drawn astronomers' attention. ...

Space Exploration Jul 11, 2018

Rare meteorite recovery in Botswana can help reveal secrets of outer space

A meteorite has been recovered from a remote area of Botswana. The event is one of a kind as the meteor was identified before entering the atmosphere, and its fall and retrieval documented. It's only the second time this ...

Space Exploration Jun 27, 2018

Mars' surface hardened quickly, boosting odds of life: study

The crust that encases rocky planets and makes possible the emergence of life took shape on Mars earlier than thought and at least 100 million years sooner than on Earth, researchers said Wednesday.

Astronomy Jun 11, 2018

Exploring the dusty prehistory of the solar system

The solar system as we know it formed about 4.6 billion years ago as fields of interstellar dust orbiting the sun aggregated into planets and smaller objects. Presolar dust particles no longer exist in the inner solar system, ...

Space Exploration Apr 20, 2018

Simulations suggest Saturn may have helped create Jupiter's big moons

A team of researchers from France and the U.S. has created a computer simulation of the development of the solar system focusing on Jupiter and the origins of its moons. In their paper uploaded to the arXiv preprint server, ...

Astronomy Apr 11, 2018

SPHERE reveals fascinating zoo of discs around young stars

The SPHERE instrument on ESO's Very Large Telescope (VLT) in Chile allows astronomers to suppress the brilliant light of nearby stars in order to obtain a better view of the regions surrounding them. This collection of new ...

Space Exploration Mar 27, 2018

New study shows what interstellar visitor 'Oumuamua can teach us

The first interstellar object ever seen in our solar system, named 'Oumuamua, is giving scientists a fresh perspective on the development of planetary systems. A new study by a team including astrophysicists at NASA's Goddard ...

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