Tags » Brown Dwarf

Elusive Nemesis

ENGLISH
One other proposal that has been put forward is that the sun has a companion star, called Nemesis. Nemesis is a hypothetical, faint red/brown dwarf star orbiting the sun at a distance of about 1.5 light years. 167 more words

Earth's Changes

Report of discovery of large object in far outer edges of solar system incites skeptical reactions

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Phys.org

December 11, 2015 by Bob Yirka report

ALMA prototype-antennas at the ALMA test facility. Credit: ESO

(Phys.org)—Two separate teams of researchers (one from Mexico, the other Sweden), have incited skepticism among the astronomy community by posting papers on the preprint server arXiv each describing a different large object they observed in the outer edges of the solar system. 215 more words

Earth Watch Report

Most Kepler objects of interest probably not exoplanets after all

From an article on the Sky and Telescope website by Monica Young, originally posted on December 10, 2015.

More than half of the potential giant planets detected by NASA’s Kepler satellite might not be planets after all according to a study by Alexandre Santerne (University of Porto, Portugal, and Aix Marseille University, France). 182 more words

NASA

Cool Star Marked by Jupiter-Like Storm

Using NASA’s Spitzer and Kepler space telescopes, a group of astronomers have identified a tiny star with what appears to be a giant, cloudy storm persistently raging – very much similar to Jupiter’s Great Red Spot vortex. 298 more words
Featured

A Totally Metal Weather Forecast

Scientists have determined that the weather forecast on PSO J318.5-22, a mysterious object that does not orbit any star but floats freely, is pretty extreme. 222 more words

News

Why exoplanets should have ionospheres and brown dwarfs chromospheres

Do exoplanets have an ionosphere? What does a brown dwarf need to form aurorae even without a companion? Isabel Rodriguez-Barrera and colleagues, including Christiane Helling… 1,195 more words

Helling

Brown Dwarfs

A brown dwarf is an object that didn’t quite make it to stardom. It’s sub-stellar without enough mass to sustain hydrogen-1 fusion like a main sequence star. 142 more words

Science