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Tag: Eric Mamajek

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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‘Scientific wonderland’ expected as spacecraft approaches Pluto (+video)

‘Scientific wonderland’ expected as spacecraft approaches Pluto (+video)

April 18, 2015

Be careful what name you pick; you’ll have to live with it, cautions Eric Mamajek, an astronomer at the University of Rochester. With help from astronomy students, he and 10 colleagues from the US, Mexico, and France shipped a proposed naming scheme to the IAU early last year and posted the proposal on line two weeks ago.

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Small star passed through the edge of our solar system 70,000 years ago

Small star passed through the edge of our solar system 70,000 years ago

March 9, 2015

An international group of astronomers found that a dim star known as a red dwarf skimmed through the outskirts of our solar system, coming within 8 trillion kilometers of Earth some 70,000 years ago. Eric Mamajek talks about this amazing discovery on today’s “One on One” segment.

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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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Massive alien ring system is much larger than Saturn’s, and may contain exomoons

Massive alien ring system is much larger than Saturn’s, and may contain exomoons

February 1, 2015

Astronomers this week announced yet another mind-boggling finding: a ring system which orbits a distant giant planet has been found to be much larger and more massive than Saturn’s ring system, the best known example in our own Solar System.

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Huge ring system surrounds newly discovered exoplanet

Huge ring system surrounds newly discovered exoplanet

January 30, 2015

A pair of astronomers recently announced that they have discovered a celestial body outside of our solar system that they refer to as a “Super Saturn”. That’s because the object is surrounded by a ring system that’s 200 times as large as those that circle Saturn. Dr. Eric Mamajek from the University of Rochester is one of the astronomers who made the discovery.

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