Stig Östlund
onsdag, juli 01, 2015
VLBI, or Very Long Baseline Interferometry, is a technique that uses multiple radio telescopes to very precisely measure the Earth's orientation. It was originally invented back in the 1960s to take better pictures of quasars, but scientists soon found out that if you threw the process in reverse, you could measure how the ground beneath the telescopes moves around, how long days really are, and how the Earth wobbles on its axis as it revolves around the sun! Learn more about VLBI here!
For more information about NASA's Space Geodesy Project, visit http://space-geodesy.nasa.gov!
This video is presented in both stereoscopic 3D and standard 2D versions.
This video is public domain and can be downloaded at: http://svs.gsfc.nasa.gov/goto?10964
Viktigt
tisdag, juni 30, 2015
Active sunspot AR2371 has just disappeared over the sun's western limb.
måndag, juni 29, 2015
Wimbledon Tennis Schedule
| Date | Competition | Courts |
|---|---|---|
| Mon 29 June | Men's and Ladies' Singles 1st Round | CC, C1, C2, Outside Courts Men's Champion opens play on Center Court |
| Tues 30 June | Men's and Ladies' Singles 1st Round | CC, C1, C2, Outside Courts |
| Wed 1 July | Men's and Ladies' Singles 2nd Round | CC, C1, C2, Outside Courts |
| Thur 2 July | Men's and Ladies' Singles 2nd Round | CC, C1, C2, Outside Courts |
| Fri 3 July | Men's and Ladies' Singles 3rd Round | CC, C1, C2, Outside Courts |
| Sat 4 July | Men's and Ladies' Singles 3rd Round | CC, C1, C2, Outside Courts |
| Sun 5 July | No play | |
| Mon 6 July | Men's and Ladies' Singles 4th Round | CC, C1, C2, Outside Courts |
| Tues 7 July | Ladies' Singles Quarter-Finals | Center Court & No.1 Court |
| Wed 8 July | Men's Singles Quarter-Finals | Center Court & No.1 Court |
| Thur 9 July | Ladies' Singles Semi-Finals | Center Court |
| Fri 10 July | Men's Singles Semi-Finals | Center Court |
| Sat 11 July | Ladies' Singles Final Men's Doubles Final Ladies' Doubles Final | Center Court |
| Sun 12 July | Men's Singles Final Mixed Doubles Final | Center Court |
Z Machine Helps Solve Saturn's Two Billion-year Age Problem
Planets tend to cool as they get older, but Saturn is hotter than astrophysicists say it should be without some additional energy source.
More: www.sciencenewsline.com/articles/2015062705240007.html
söndag, juni 28, 2015
lördag, juni 27, 2015
Argentina-Colombia. Copa America. Kvartsfinal
Straffavgörande. Argentina vann. Möter segraren idag mellan Brasilien och Paraguay
Handprints on Hubble
As the Hubble Space Telescope celebrates its 25th anniversary, scientists are reflecting on the key role astronauts played in allowing the telescope to continue making great discoveries.
Visit: www.science.nasa.gov/ for more.
fredag, juni 26, 2015
Astronomers Discover Giant Comet-Like Tail on Neptune-Sized Exoplanet
--> www.sci-news.com/astronomy/science-gliese-436b-comet-like-tail-02951.html
Exoplanet = planet utanför vårt solsystem (fler än tusen har - hittillls - upptäckts)
torsdag, juni 25, 2015
Hubble Sees a 'Behemoth' Bleeding Atmosphere Around a Warm Neptune-Sized Exoplanet
--> www.hubblesite.org/newscenter/archive/releases/2015/17/image/a/









