Current Affairs - April, 2019Science & Techonlogy Dose

NASA’s Exoplanet Mission Finds 1st Earth-Size Alien World – GK Dose

NASA’s Exoplanet Mission Finds 1st Earth-Size Alien World

The Transiting Exoplanet Survey Satellite (TESS) Mission of NASA has discovered its first Earth-size alien world.

About the Discovery

  • The planet, HD 21749c, is about 89 per cent of Earth’s diameter.
  • The planet orbits HD 21749, a K-type star with about 70 per cent of the Sun’s mass located 53 light years away in the southern constellation Reticulum.
  • HD 21749c is the second planet TESS has identified in the system.
  • HD 21749c is the 10th confirmed planet discovered by TESS, and hundreds of additional candidates are now being studied.
  • HD 21749c doesn’t seem to have good life-hosting potential as it circles its host star very tightly, completing one orbit every 7.8 Earth days, and is therefore probably quite hot.

TESS which was launched just about a year ago is already a game-changer in the planet-hunting business. TESS total tally is likely to end up topping that of Kepler has found about 70% of the 4,000 exoplanets discovered to date.

Show More

Jayant Srivastava

Hello Everyone, Am happy to start this project which is Completely a free service. Though am not a mentor, Am just doing this for my self satisfaction and for supporting the Financially Backward. I think you all understand my intention in creating this and ultimate purpose of this blog is providing free material for the needy people. Coming to UPSC Preparation, people created assumptions like UPSC is the toughest exam and You can’t clear it unless you join a coaching. By this false statements economically backward Students are dropping their aspirations even before they start. To wipe out all those assumptions, I have started this. Here, all materials which are important for clearing UPSC will be shared for free of cost, yes this is completely free and we are doing this to serve the poor who can’t afford the coaching institutions. Join us on Telegram also.

Related Articles

Leave a Reply

Your email address will not be published. Required fields are marked *

Back to top button
All original content on these pages is fingerprinted and certified by Digiprove
Close