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Tag: comets

Rochester scientist discovers new comet

Rochester scientist discovers new comet

March 4, 2016

David Cameron, a visiting scientist in the Department of Physics and Astronomy, has discovered a new comet – the first to be discovered by an astronomer associated with the University or with the Rochester area in over a century, his colleagues believe.

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Star Buzzed Our Solar System during Human Prehistory

Star Buzzed Our Solar System during Human Prehistory

February 21, 2015

The red dwarf star, which has a mass about 8% that of the Sun and is orbited by a ‘brown dwarf’ companion, was discovered in 2013 in images recorded by NASA’s Wide-field Infrared Survey Explorer (WISE) mission. It is relatively nearby, at about 6 parsecs (19.6 light years) away.

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Alien star system buzzed the Sun

Alien star system buzzed the Sun

February 18, 2015

In the paper, astronomers led by Eric Mamajek at the University of Rochester, New York, say they are 98% certain that Scholz’s star travelled through what is known as the “outer Oort Cloud” – a region at the edge of the Solar System filled with trillions of comets a mile or more across.

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Alien star missed us by less than a light-year, scientists say

Alien star missed us by less than a light-year, scientists say

February 18, 2015

Astronomers say a red dwarf star and its brown dwarf companion passed within a light-year of our own sun 70,000 years ago, moving through the comets in the outer reaches of the Oort Cloud that surrounds our solar system.

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Close encounters of the starry kind: Red dwarf passed within just 0.8 light years of our solar system

Close encounters of the starry kind: Red dwarf passed within just 0.8 light years of our solar system

February 18, 2015

Dr Eric Mamajek, an astronomer at the University of Rochester who led the study, said that it is unlikely the star would have caused much disturbance to the scattered icy comets that orbit the outermost reaches of our solar system.

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A close call of 0.8 light years

A close call of 0.8 light years

February 16, 2015

A recently discovered dim star likely passed some 70,000 years ago through our solar system’s distant cloud of comets known as the Oort Cloud. No other star is known to have ever approached our solar system this closely.

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