NEOWISE tagged posts

Astronomers Spot a Star Swallowing a Planet

A dynamic rendering shows, on the left, the edge of a gigantic, yellow spherical star. A tiny red planet is in the middle and has skimmed the star. Rays of white light and blue energy radiate out from their touch.
Caption:This artist’s impression shows a doomed planet skimming the surface of its star. Astronomers used a combination of telescopes to spot the first direct evidence of an aging, bloated sun-like star, like the one pictured here, engulfing its planet. These telescopes included the Zwicky Transient Facility (ZTF) at Caltech’s Palomar Observatory, the W.M. Keck Observatory, and NASA’s NEOWISE mission.
Credits:Image: K. Miller/R. Hurt (Caltech/IPAC)

Earth will meet a similar fate in 5 billion years. As a star runs out of fuel, it will billow out to a million times its original size, engulfing any matter — and planets — in its wake...

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TESS discovers New Worlds in a River of Young Stars

This illustration sketches out the main features of TOI 451, a triple-planet system located 400 light-years away in the constellation Eridanus.
Credit: NASA’s Goddard Space Flight Center

Using observations from NASA’s Transiting Exoplanet Survey Satellite (TESS), an international team of astronomers has discovered a trio of hot worlds larger than Earth orbiting a much younger version of our Sun called TOI 451. The system resides in the recently discovered Pisces-Eridanus stream, a collection of stars less than 3% the age of our solar system that stretches across one-third of the sky.

The planets were discovered in TESS images taken between October and December 2018...

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Hubble snaps close-up of Celebrity Comet NEOWISE

This ground-based image of comet C/2020 F3 (NEOWISE) was taken from the Northern Hemisphere on July 16, 2020. The inset image, taken by the Hubble Space Telescope on Aug. 8, 2020, reveals a close-up of the comet after its pass by the Sun. Hubble’s image zeroes in on the comet’s nucleus, which is too small to be seen. It’s estimated to measure no more than 3 miles (4.8 kilometers) across. Instead, the image shows a portion of the comet’s coma, the fuzzy glow, which measures about 11,000 miles (18,000 kilometers) across in this image. Comet NEOWISE won’t pass through the inner solar system for another nearly 7,000 years.
Credits: NASA, ESA, STScI, Q. Zhang (Caltech); ground-based image copyright © 2020 by Zoltan G. Levay, used with permission

NASA Hubble Space Telescope images ...

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Two bizarre Brown Dwarfs found with Citizen Scientists’ help

This is an illustration of a brown dwarf. Despite their name, brown dwarfs would appear magenta or orange-red to the human eye if seen close up. Credits: William Pendrill

With the help of citizen scientists, astronomers have discovered two highly unusual brown dwarfs, balls of gas that are not massive enough to power themselves the way stars do.

Participants in the NASA-funded Backyard Worlds: Planet 9 project helped lead scientists to these bizarre objects, using data from NASA’s Near-Earth Object Wide-Field Infrared Survey Explorer (NEOWISE) satellite along with all-sky observations collected between 2009 and 2011 under its previous moniker, WISE...

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