Tuesday, January 16, 2018
Contact us    |    Advertise    |   Help   RSS icon Twitter icon Facebook icon
    Home  ·  News  ·  Forum  ·  Stories  ·  Image Gallery  ·  Columns  ·  Encyclopedia  ·  Videos
Find: in
This news story is archived which means that, while it is still available to view, the information contained within may be outdated and the original source site/link may no longer be viewable.

For the most recent stories, please visit either the site's home page or main news section.

Fireball planet orbits star in 8.5 hours

Posted on Tuesday, 20 August, 2013 | Comment icon 11 comments


Image credit: NASA/ESA

 
A newly discovered Earth-sized world around a distant star completes a full orbit in a matter of hours.

Dubbed Kepler 78b, the small world orbits its parent star at a distance 40 times closer than Mercury's orbit of our own sun. Not only does this produce an extremely short orbital period but the planet itself is a smouldering, hellish world with temperatures exceeding 3,000 Kelvin. By contrast, Mercury's maximum surface temperature peaks at around 700 Kelvin.

The newly discovered planet has a few other surprises in store as well. It is the first time scientists have been able to directly observe light from a planet of this size and because of its tight orbit, it is believed that it may be possible to determine its mass, a feat never achieved before for a planet outside of our own solar system.

"Researchers at the Massachusetts Institute of Technology have discovered a new, Earth-sized exoplanet for which orbiting its star is literally all in a day's work."

  View: Full article

 Source: The Register


  Discuss: View comments (11)

   


 
Recent comments on this story
Comment icon #2 Posted by Waspie_Dwarf on 20 August, 2013, 12:29
As close to its star as this planet is, I am surprised the stars gravitational pull didn't suck it right into itself. It doesn't work like that. If the orbital velocity is correct then theoretically you could orbit 2 inches above the star. In reality that can't happen. Stars have an atmosphere and if the planet orbits within this then drag will slow the planet and that will cause it to spiral into the star. Also there is the Roche Limit. If the planet orbits lower than the stars Roche limit then tidal forces will tear it apart.
Comment icon #3 Posted by Ryu on 20 August, 2013, 13:37
Yeah, with a velocity like that I suppose the planets orbit can be maintained for quite some time. But what about the slingshot effect. With a high velocity rate, isn't it possible for the planet to be flung away at some point?
Comment icon #4 Posted by Waspie_Dwarf on 20 August, 2013, 14:06
But what about the slingshot effect. With a high velocity rate, isn't it possible for the planet to be flung away at some point? Again it doesn't work like that. If an object is in orbit it means that the force trying to make it fly away from the object it is orbit around (inertia) is balanced by the force trying to pull it into the object it is orbiting (gravity). They will remain balanced unless another force acts on them.
Comment icon #5 Posted by Sundew on 20 August, 2013, 14:32
As close to its star as this planet is, I am surprised the stars gravitational pull didn't suck it right into itself. Anyways, that was pretty neat to read. Again science learns more and more each day. At our galactic center stars are racing around a black hole as well, and while the BH may be pulling gases off their surfaces and "consuming" the gas, despite the intense gravitation (billions of times that of our sun), they do not just fall into the black hole, they orbit it. It would take some other object, say another star, passing close by to change the orbit of the star in question, in whic... [More]
Comment icon #6 Posted by pallidin on 20 August, 2013, 14:55
Amazing. I like how, even after being(somewhat out-of-service) that there is more previous data to pour over and examine. I say "somewhat" because even though 2 out the 4 gyros have failed, I think I heard that they are considering using the onboard mini-thrusters to somewhat stabilize the telescope for additional imaging. Maybe Waspie has more info on that.
Comment icon #7 Posted by Waspie_Dwarf on 20 August, 2013, 16:45
I say "somewhat" because even though 2 out the 4 gyros have failed, I think I heard that they are considering using the onboard mini-thrusters to somewhat stabilize the telescope for additional imaging. Maybe Waspie has more info on that. Basically Kepler's planet hunting days are over. NASA is looking into what useful mission it could now carry out. There is more info HERE.
Comment icon #8 Posted by brlesq1 on 20 August, 2013, 22:32
What a great article. Too bad Kepler failed.
Comment icon #9 Posted by Rolci on 21 August, 2013, 13:08
So what WOULDN'T melt on the surface?
Comment icon #10 Posted by shrooma on 21 August, 2013, 19:34
So what WOULDN'T melt on the surface? . Adamantium. Superman's underpants. margaret thatcher's heart. a frozen 20lb turkey at 11am on christmas morning..... ;-)
Comment icon #11 Posted by spacecowboy342 on 23 August, 2013, 18:17
At our galactic center stars are racing around a black hole as well, and while the BH may be pulling gases off their surfaces and "consuming" the gas, despite the intense gravitation (billions of times that of our sun), they do not just fall into the black hole, they orbit it. It would take some other object, say another star, passing close by to change the orbit of the star in question, in which case it might fall in, be flung away, or merely change its orbit. Just think of the earth's orbit around our own sun, or the moon around the earth, on our time scale, the orbits are very stable. We do... [More]


Please Login or Register to post a comment.


  On the forums
Forum posts:
Forum topics:
Members:

6079982
260376
172472

 
Aztec epidemic mystery may have been solved
1-16-2018
500 years ago, a deadly epidemic known as 'cocoliztli' killed nearly 80 per cent of the Aztec population.
Could giant lasers shoot down space debris ?
1-15-2018
A new study by researchers in China has put forward a novel new way of tackling the problem of space junk.
'Ingredients for life' found in meteorites
1-15-2018
Scientists have found new evidence to suggest that life could have arisen elsewhere in the solar system.
Titanic to be turned in to a tourist attraction
1-14-2018
Entrepreneur Stockton Rush is aiming to offer tourists the opportunity to visit the wreckage in person.
Other news in this category
Could giant lasers shoot down space debris ?
Posted 1-15-2018 | 4 comments
A new study by researchers in China has put forward a novel new way of tackling the problem of space junk....
 
'Ingredients for life' found in meteorites
Posted 1-15-2018 | 6 comments
Scientists have found new evidence to suggest that life could have arisen elsewhere in the solar system....
 
New clue found in fast radio bursts mystery
Posted 1-14-2018 | 0 comments
Scientists suspect that the unexplained bursts could be coming from a very strong magnetic environment....
 
Tunnel entrances spotted on Moon's surface
Posted 1-13-2018 | 33 comments
The openings, which were found near the Moon's north pole, could lead to an extensive network of tunnels....
 
Large water ice glaciers discovered on Mars
Posted 1-12-2018 | 0 comments
The ice, which is thought to descend almost 330ft, could help to support a future manned presence on Mars....
 
James Webb Space Telescope completes tests
Posted 1-11-2018 | 7 comments
The next generation telescope will enable us to directly study the atmospheres of extrasolar planets....
 
Alien chemistry of the Hypatia stone revealed
Posted 1-10-2018 | 7 comments
The mysterious space rock contains micro-mineral compounds found nowhere else in the solar system....
 
Japanese astronaut experiences 'growth spurt'
Posted 1-9-2018 | 9 comments
Lieutenant Norishige Kanai has grown so much while in space that he may no longer fit in the Soyuz capsule....
 
SpaceX launches mystery government satellite
Posted 1-8-2018 | 19 comments
Code-named Zuma, the secretive satellite was launched in to orbit aboard a Falcon 9 rocket on Sunday night....
 
Extended weightlessness causes 'space fever'
Posted 1-7-2018 | 1 comment
Astronauts who spend a lot of time in space are at risk of experiencing a rise in core body temperature....
 
Astronauts identify mystery space microbes
Posted 1-3-2018 | 14 comments
The DNA of microbes found on the International Space Station has been sequenced in space for the first time....
 

 View: More news in this category
 
Top   |  Home   |   Forum   |   News   |   Image Gallery   |  Columns   |   Encyclopedia   |   Videos   |   Polls
UM-X 10.7 Unexplained-Mysteries.com 2001-2017
Privacy Policy and Disclaimer   |   Cookies   |   Advertise   |   Contact   |   Help/FAQ