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Currently Browsing: Results for Tag "Stars"

Astronomers spot mysterious objects spewing out gas at a quarter the speed of light

Astronomers spot mysterious objects spewing out gas at a quarter the speed of light In fact, surveying x-ray sources occasionally results in entirely new, unexplained phenomena.These ultra-bright x-ray sources are blasting out gas at more than a quarter the speed of light, far faster than should be possible.

TRAPPIST-1: a star with three habitable planets, just 40 light years away

TRAPPIST-1: a star with three habitable planets, just 40 light years away The star is a so-called brown dwarf star, or a star that isn’t massive enough to exert the level of gravity needed to jump-start hydrogen fusion at its core.This means two things: It’s very cold (sometimes referred to as an ultra-cool dwarf star) and it doesn’t put out very much visible light.

Science may be close to understanding where heavy elements come from

Science may be close to understanding where heavy elements come from It seems so simple: where do the elements come from?Signals collected from the brightest stars in a tiny galaxy called Reticulum II show far higher concentrations of heavy elements than theorized.

Astronomers discover the first water clouds outside our solar system

Astronomers discover the first water clouds outside our solar system This week, a team of astronomers led out of UC Santa Cruz released a report on the brown dwarf WISE0855, by far the dimmest object ever imaged in its spectral range.Their results confirm a preexisting assumption that brown dwarfs ought to be capable of supporting enough water to create phenomena like water clouds, and greatly invigorate the search for life on these cold, extremely common worlds.

Ancient supernovae may have accelerated evolution on Earth

Ancient supernovae may have accelerated evolution on Earth Now, new evidence shows that those previously discovered supernovae would have had a profound effect on Earth, and potentially on the development of the life it held.The expectation was that such distant explosions wouldn’t have a significant effect on the surface, but modelling revealed a significant uptick in surface radiation exposure.

Astronomers observed a nova explosion for the first time by accident

Astronomers observed a nova explosion for the first time by accident For the first time, a team of scientists have captured all phases of a classical nova explosion — before, during, and after the event.Our sun will most likely become a white dwarf at the end of its life.

Closest exoplanet Proxima b remains mysterious, in the absence of direct observation

Closest exoplanet Proxima b remains mysterious, in the absence of direct observation The best we can do right now is make some educated guesses about conditions on Proxima b.According to researchers at France’s CNRS, there’s at least a possibility that Proxima b has liquid oceans on the surface.

Planet nine might be pulling our solar system out of alignment

Planet nine might be pulling our solar system out of alignment Their observations indicate that planet nine could be causing a “wobble” in the solar system.While we can’t see planet nine, astronomers have detected a number of bizarre effects in the solar system that could be explained by the object.

Astronomers get a chance to watch a rare red nova in its opening strains

Astronomers get a chance to watch a rare red nova in its opening strains As you might suspect, a contact binary is an unstable state of affairs.When that finally happens, the cores of the two stars will merge and then explode as a luminous red nova.