ASTRONOMY

Astronomers confirm size of largest comet ever discovered, bigger than Rhode Island

ASTRONOMY
Astronomers using NASA's Hubble Telescope have confirmed the existence the largest comet ever discovered, and it will pass by our sun in the next...

Image: Opening of Apollo 17 core sample, vacuum-sealed since 1972

ASTRONOMY
A satisfying, audible "pop" marked a successful piercing of the sealed Apollo 17 sample container using the ESA designed and built piercing tool. The...

4 billion-year-old relic from early solar system heading our way

ASTRONOMY
An enormous comet—approximately 80 miles across, more than twice the width of Rhode Island—is heading our way at 22,000 miles per hour from the...

A dusty, compact object bridging galaxies and quasars at cosmic dawn

ASTRONOMY
An international effort led by astrophysicists at the Niels Bohr Institute, University of Copenhagen, and the Technical University of Denmark has identified a distant...

Team behind discovery of planet with three stars retracts their article

ASTRONOMY
An international team of researchers who published a paper in the journal Science in 2016 describing their discovery of an exoplanet with three stars,...

Chinese astronauts return to Earth after six months on space station

ASTRONOMY
Three Chinese astronauts returned to Earth on Saturday after 183 days in space, ending China's longest crewed mission as it continues its quest to...

Earliest record of a candidate aurora found in Chinese annals

ASTRONOMY
A celestial event mentioned in an ancient Chinese text turns out to be the oldest known reference to a candidate aurora, predating the next...

Video: Space telescope ‘a little like a time machine’

ASTRONOMY
Assistant professor Michael Maseda was one of many who contributed to development of the James Webb Space Telescope. He looks forward to using the instrument...

Largest comet ever seen has a heart ‘blacker than coal,’ and it’s headed this way

ASTRONOMY
Astronomers have measured the icy heart of one of the largest comets ever discovered — a gargantuan, 4 billion-year-old rock that's currently barreling toward...

Modeling Earth’s magnetosphere in the laboratory

ASTRONOMY
A magnetosphere forms around any magnetized object, such as a planet, that is immersed within a stream of ionized gas, called plasma. Because Earth...

Image: The largest antenna ever tested in ESA’s Hertz radio frequency test chamber

ASTRONOMY
The largest antenna ever tested in ESA's Hertz radio frequency test chamber is this 5-m diameter transponder antenna, which will operate down on the...

Is it time to send another message to intelligent aliens?

ASTRONOMY
Researchers want to open up a dialogue about what humanity should advertise about itself in deep space. Scientists have crafted a new message for any...
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