Monday July 16, 2018

NASA’s Hubble Space Telescope detects giant hydrogen cloud around small exoplanet

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photo: spacefellowship.com
photo: spacefellowship.com

 Washington: A team of scientists using NASA’s  Hubble Space Telescope has discovered an immense  cloud of hydrogen escaping from a warm Neptune-  sized exoplanet, thus boosting the the prospect of  finding ocean-bearing exoplanets.

Such a phenomena not only helps explain the  formation of hot and rocky ‘super-earths’, but also may  potentially act as a signal for detecting extrasolar  oceans, the study said.

“Escaping gas has been seen in the past for larger gas giant exoplanets, so it was a surprise that looking at a much smaller planet resulted in such a big and stunning comet-like display,” said study co-author David Sing, professor at University of Exeter in Britain.

With a mass approximately 23 times that of our Earth located 33 light years away, the exoplanet GJ436b rotates around its star in only three days and has an atmosphere which leaves behind a gigantic trail of hydrogen.

The scientists were able to see this hydrogen cloud’s shadow when it passes in front of the star.

“This cloud is very spectacular, though the evaporation rate does not threaten the planet right now.”

GJ436b resides very close to its star — less than two million miles — and whips around it in just 2.6 Earth days. In comparison, the Earth is 93 million miles from our sun and orbits it every 365.24 days.

The team’s results are presented in the journal Nature. (IANS)

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Emmy Awards 2018: NASA Nominated for Stunning Footage of Cassini voyage to Saturn

The Emmy Awards nominations have turned out to be more diverse than last year

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The Primetime Emmys will be awarded by the ATAS in Los Angeles on September 17.
The Primetime Emmys will be awarded by the ATAS in Los Angeles on September 17. Flickr

The Academy of Television Arts and Sciences (ATAS) has nominated NASA’s Jet Propulsion Laboratory (JPL) for Outstanding Original Interactive Program for its coverage of the Cassini mission’s Grand Finale at Saturn.

The Primetime Emmys will be awarded by the ATAS in Los Angeles on September 17.

The Creative Arts Emmys, which include interactive awards, will be presented during a separate ceremony on September 15 at the Microsoft Theatre in Los Angeles, NASA said in a statement on Friday.

In 2017, after nearly 20 years in space and 13 years revealing the wonders of Saturn, NASA’s Cassini orbiter was running out of fuel. As a final act, Cassini began a whole new mission — its Grand Finale, where it journeyed into the unknown and ended with a spectacular plunge into the planet.

Cassini’s first, daring dive into the unexplored space between the giant planet and its rings kicked off the campaign on April 26 in 2017.

NASA's stunning footage of Cassini lands Emmy nomination
NASA’s stunning footage of Cassini lands Emmy nomination. Pixabay

It culminated on September 15, 2017, with live coverage of Cassini’s plunge into Saturn’s atmosphere, with the spacecraft sending back science to the very last second.

JPL created a multi-month digital campaign to celebrate the mission’s science and engineering accomplishments and communicate why the spacecraft must meet its end in the skies of Saturn.

The multi-faceted campaign included regular updates on Twitter, Facebook, Snapchat, Instagram and the Cassini mission website, multiple live social, web and TV broadcasts during which reporter and public questions were answered.

Also Read: NASA Juno Data Indicate Another Possible Volcano on Jupiter Moon Io

A dramatic short film to communicate the mission’s story and preview its endgame; multiple 360-degree videos, including NASA’s first 360-degree livestream of a mission event from inside JPL mission control.

The Emmy Awards nominations have turned out to be more diverse than last year. Fantasy drama “Game of Thrones” has earned 22 nominations for the coveted Awards, while HBO’s 17-year streak as the most nominated network has been broken by Netflix. (IANS)