Sunday, November 19, 2017
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news story is archived which means that, while it is still available to view, the information contained within may be outdated and the original source site/link may no longer be viewable.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:

6034121
259191
171152

 
Flat-Earthers gather for first ever conference
11-19-2017
Despite overwhelming evidence to the contrary, some people still believe that the Earth is flat.
Humanoid robot is now able to do backflips
11-18-2017
Thanks to its latest upgrade, Boston Dynamics' Atlas robot is now capable of performing gymnastics.
Fireball lights up the night sky over Finland
11-18-2017
A time-lapse camera captured the moment an intense fireball streaked across the sky over Lapland.
China to build nuclear-powered space shuttle
11-17-2017
The long-term roadmap for China's space program has been revealed by one of its primary contractors.
Other news in this category
Fireball lights up the night sky over Finland
Posted 11-18-2017 | 5 comments
A time-lapse camera captured the moment an intense fireball streaked across the sky over Lapland....
 
China to build nuclear-powered space shuttle
Posted 11-17-2017 | 5 comments
The long-term roadmap for China's space program has been revealed by one of its primary contractors....
 
New Earth-sized extrasolar planet discovered
Posted 11-16-2017 | 19 comments
Situated just 11 light years away, Ross 128 b is shaping up to be a promising place to look for life....
 
Dream Chaser completes successful glide test
Posted 11-13-2017 | 19 comments
Sierra Nevada has announced that its Dream Chaser spaceplane has completed a critical free-flight test....
 
Giant 'planet' found at the galaxy's center
Posted 11-11-2017 | 41 comments
A mysterious world 4,000 times more massive than the Earth has been found lurking 22,000 light years away....
 
China's space station could hit a major city
Posted 11-9-2017 | 35 comments
The European Space Agency has warned that there is a chance that the station could hit a populated area....
 
Enceladus ocean 'could have evolved life'
Posted 11-7-2017 | 7 comments
Scientists now believe that the ocean of Enceladus has been around long enough for life to have evolved there....
 
Proxima Centauri may have several planets
Posted 11-6-2017 | 8 comments
Observations of our closest neighboring star have revealed the possible presence of multiple planets....
 
First dog in space launched 60 years ago
Posted 11-3-2017 | 14 comments
On November 3, 1957, an unassuming canine named Laika became the first dog ever to venture in to space....
 
'Monster' planet discovered orbiting tiny star
Posted 11-1-2017 | 1 comment
The planet, which is much too big for its star, defies our current understanding of planetary formation....
 
NASA's next Mars rover will have 23 'eyes'
Posted 11-1-2017 | 5 comments
The Mars 2020 rover will be equipped with a wide assortment of cameras for surveying the Red Planet....
 

 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