A grand synthesis of Rosetta data has shown how its target comet repeatedly changed color during the two years it was watched by the spacecraft. The chameleon comet's nucleus became progressively less red as it made its close ...
Space Exploration
Feb 06, 2020
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355
Under the leadership of astrophysicist Kathrin Altwegg, Bernese researchers have found an explanation for why very little nitrogen could previously be accounted for in the nebulous covering of comets: the building block for ...
Astronomy
Jan 21, 2020
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145
Astronomers at the National Astronomical Observatory of Japan (NAOJ) have analyzed the paths of two objects heading out of the Solar System forever and determined that they also most likely originated from outside of the ...
Astronomy
Jan 17, 2020
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224
Phosphorus, present in our DNA and cell membranes, is an essential element for life as we know it. But how it arrived on the early Earth is something of a mystery. Astronomers have now traced the journey of phosphorus from ...
Astronomy
Jan 15, 2020
0
702
There should be interstellar comets hiding in our solar system after making a journey of many light-years. Maybe we have already seen one but believed it was a "normal" comet formed in the solar system, according to Tom Hands, ...
Space Exploration
Dec 20, 2019
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12
When astronomers see something in the universe that at first glance seems like one-of-a-kind, it's bound to stir up a lot of excitement and attention. Enter comet 2I/Borisov. This mysterious visitor from the depths of space ...
Space Exploration
Dec 12, 2019
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760
Using data from NASA's Transiting Exoplanet Survey Satellite (TESS), astronomers at the University of Maryland (UMD), in College Park, Maryland, have captured a clear start-to-finish image sequence of an explosive emission ...
Astronomy
Dec 03, 2019
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384
Yale astronomers have taken a new, close-up image of the interstellar comet 2l/Borisov.
Space Exploration
Nov 27, 2019
1
178
Using the Cooled Mid-Infrared Camera and Spectrometer (COMICS) on the Subaru Telescope, astronomers have detected an unidentified infrared emission band from comet 21P/Giacobini-Zinner (hereafter, comet 21P/G-Z) in addition ...
Space Exploration
Nov 19, 2019
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27
LISA Pathfinder, a mission led by ESA (the European Space Agency) that included NASA contributions, successfully demonstrated technologies needed to build a future space-based gravitational wave observatory, a tool for detecting ...
Space Exploration
Nov 18, 2019
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360
A comet is a Small Solar System Body that orbits the Sun. When close enough to the Sun, a comet exhibits a visible coma (fuzzy "atmosphere"), and sometimes a tail, both because of the effects of solar radiation upon the comet's nucleus. Comet nuclei are themselves loose collections of ice, dust and small rocky particles, ranging from a few kilometers to tens of kilometers across.
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