Support Astromart! | Log In | Help
Astronomy NewsTelescope ClassifiedsTelescope AuctionsTelescope Articles & ArticlesTelescope Articles & ReviewsTelescope and Astronomy ForumsAstronomy Events Calendar

Terms of Service
Privacy Policy
Help & FAQ
Astronomy Links
User Profiles
Top Users List
RSS Feeds

User Name:


Save Login
New to Astromart?
Register an account...

2016 Presidential Election

View Comments (17)... Previous Polls...

Is It Time to Discard the Whole Dark Matter Contrivance?
Posted by Guy Pirro on 10/14/2016 9:12 AM
In the late 1970s, astronomers Vera Rubin and Albert Bosma independently found that spiral galaxies rotate at a nearly constant speed. The velocity of the stars and gas inside a galaxy does not decrease with the radius, as one would expect from Newton's laws and the distribution of visible matter. Rather, it remains approximately constant. For lack of a better explanation, such "flat rotation curves" have generally been attributed to a mysterious, invisible, and still undetected dark matter surrounding these galaxies, which provides the additional gravitational attraction required to balance everything out. Now a team led by Case Western Reserve University researchers has found a significant new relationship in spiral and irregular galaxies -- The acceleration observed in rotation curves tightly correlates with the gravitational acceleration expected from the visible mass only. This new work challenges the current understanding (and possibly even the existence) of dark matter.
| Read full story | 8 Comments... |

Latest Astronomy News

Our Galaxy's Most Mysterious Star is Even Stranger Than We Thought
What Happened After the Lights Came On in the Universe?
NASA's THEMIS Sees Auroras Move to the Rhythm of the Beat
Closeby Brown Dwarfs are Hiding in Plain Sight
Earth-mass World Found in Habitable Zone of Alpha Centauri Star System

More Astronomy News...

Latest Articles & Telescope Reviews

Stardust Gallery LED Lightbox Review and Metallic Print Review
A New Refractor On The Horizon
Virtual counterweight for AZ3 mounts
New electronic focusing system from Starlight Instruments
Explore Scientific AR 102

More Articles & Telescope Reviews...

Featured Telecope Classifieds

Meade Optical Tube Assembly (OTA) SALE!
Anacortes Telescope & Wild Bird
*SOLD* Oben AC-1451 4-Sect. Alum. Tripod
DSLR Pro-Kits w/VariMax + 2" UltraWide Adapters

More Telescope Classified Listings...

Auctions Ending Soon

Meade round steel tripod tray brace CLEAN
$1.00 (1 bids)
8 hours, 17 minutes remaining
Unknown model T-MD 35mm t-ring Japan
  (0 bids)
9 hours, 28 minutes remaining
Unknown 35mm T-ring from Japan "L"
  (0 bids)
9 hours, 31 minutes remaining
Olympus OM 35mm t-ring Japan
  (0 bids)
9 hours, 33 minutes remaining
Unknown camera t-ring from Japan w lock lever
  (0 bids)
9 hours, 38 minutes remaining
Pentax 35mm K/M t-ring from Japan great
$1.00 (1 bids)
10 hours, 4 minutes remaining

Auction Listings...

Funding Member
Funding Member
Telescopes, Astronomy,

View All Sponsors...


All times are in (GMT-8:00) Pacific Standard Time Zone  
Astronomy News | Telecope Classifieds | Telescope Auctions | Telescope Reviews | Telescopes | Telescope and Astronomy Forums | My Account | Help | RSS