Äîêóìåíò âçÿò èç êýøà ïîèñêîâîé ìàøèíû. Àäðåñ îðèãèíàëüíîãî äîêóìåíòà : http://www.astronomy.com/magazine/ask-astro/2014/02/brown-dwarf
Äàòà èçìåíåíèÿ: Unknown
Äàòà èíäåêñèðîâàíèÿ: Sun Apr 10 10:37:05 2016
Êîäèðîâêà: ISO8859-5
Ïîèñêîâûå ñëîâà: vallis
Astronomers recently discovered brown dwarfs of only a few hundred degrees fahrenheit, which seems about the same temperature as some planets. So what is the difference between a brown dwarf and a planet? | Astronomy.com
ASY160501
Tonight's Sky
Sun
ò??
ò??
Sun
Moon
ò??
ò??
Moon
ò??
ò??
Mercury
ò??
ò??
Mercury
ò??
Venus
ò??
ò??
Venus
ò??
Mars
ò??
ò??
Mars
ò??
Jupiter
ò??
ò??
Jupiter
ò??
Saturn
ò??
ò??
Saturn
ò??

Tonight's Sky ò?? Change location

OR

Searching...

Tonight's Sky ò?? Select location

Tonight's Sky ò?? Enter coordinates

ÒÀ '
ÒÀ '
MENU
Search Astronomy.com
ASY160501

ABOUT THE MAGAZINE

About Us
Back Issues
Email Newsletter
Renew
Digital Editions
Advertiser Links
Trips & Tours
Contact Us
Current Issue
Special Issues
Subscribe
Give a Gift
Advertise with Us
Contests
Press Room
Subscriber Extras

SUBSCRIBER EXTRAS

IN EVERY ISSUE

Sky this Month
Ask Astro
Web Extras

COLUMNISTS

Bob Berman
Glenn Chaple
Stephen James O'Meara
Erika Rix
Tony Hallas
Adam Block
Jeff Hester

FEATURES

50 Greatest Mysteries
50 Weirdest Objects
Superstars Podcast
StarDome
Star Atlas
Product Reviews
PIA20070_ip

RECENT HEADLINES

TOPICS

Podcast_032912

RECENT HEADLINES

TOPICS

PICTURE OF THE DAY

The Horsehead Nebula in Orion
The Horsehead Nebula in Orion

RECENT GALLERIES

TOPICS

Gravitational waves

RECENT HEADLINES

TOPICS

RECENT POSTS

TOPICS

READER GALLERIES

TOPICS

RECENT PRODUCTS

TOPICS

CURRENT ISSUE

ASY160501
  • Home
  • /
  • Magazine
  • /
  • Ask Astro
  • /
  • Astronomers recently discovered brown dwarfs of only a few hundred degrees fahrenheit, which seems about the same temperature as some planets. So what is the difference between a brown dwarf and a planet?
FROM THE April 2014 ISSUE

Astronomers recently discovered brown dwarfs of only a few hundred degrees fahrenheit, which seems about the same temperature as some planets. So what is the difference between a brown dwarf and a planet?

Ewell Schirmer, Plano, Texas
Published: Monday, February 24, 2014
RELATED TOPICS: BROWN DWARFS
Astronomers recently found brown dwarfs with surface temperatures of a few hundred degrees Fahrenheit.

This is an excellent question, and it’s one that even astronomers have a hard time agreeing on. There are three criteria that we consider when trying to distinguish among stars, giant planets, and brown dwarfs: how they formed, how massive they are, and what they look like.

Astronomy magazine subscribers can read the full answer for free. Just make sure you're registered with the website.

Already a subscriber? Register now!

Registration is FREE and takes only a few seconds to complete. If you are already registered on Astronomy.com, please log in below.
Register now for free
Already Registered?
Click here to log in to your account »

YOU MIGHT ALSO LIKE

81005
69092
The Worlds Greatest Telescopes
yhst22106725251441_2270_192084238
appleappstore512
yhst22106725251441_2270_129134122
ASYPDF001
yhst22106725251441_2271_317432501
ADVERTISEMENT

FREE EMAIL NEWSLETTER

Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter.

THE MAGAZINE

ASY160501
Table of Contents
Subscribe
Digital Editons
ADVERTISEMENT
ADVERTISEMENT
asy_gravitational_eguide

Click here to receive a FREE e-Guide exclusively from Astronomy magazine.

Find us on Facebook
Astronomy Magazine
ASY160501

RENEW
DIGITAL EDITIONS
GIVE A GIFT
CUSTOMER SERVICE
Kalmbach Publishing Co.