Forum Dhammacitta

Komunitas => Ilmu Pengetahuan dan Teknologi => Sains => Topic started by: kullatiro on 24 August 2010, 09:04:21 PM

Title: Dark Energy
Post by: kullatiro on 24 August 2010, 09:04:21 PM
penampakan Dark energy (energi hitam) yang misterius.
(https://forum.dhammacitta.org/proxy.php?request=http%3A%2F%2Fwww.sciencedaily.com%2Fimages%2F2010%2F08%2F100819141917-large.jpg&hash=f229ac767207223aa540dfa1ae214bf9bd4ce746)
(https://forum.dhammacitta.org/proxy.php?request=http%3A%2F%2Fwww.jpl.nasa.gov%2Fimages%2Fhubble%2F20100819%2Fpia13339-640.jpg&hash=98da9667dd93cadbf219ac5dec8b56ad17fbc733)
Cosmic Lens Used to Probe Dark Energy for First Time

PASADENA, Calif. -- Astronomers have devised a new method for measuring perhaps the greatest puzzle of our universe -- dark energy. This mysterious force, discovered in 1998, is pushing our universe apart at ever-increasing speeds.

For the first time, astronomers using NASA's Hubble Space Telescope were able to take advantage of a giant magnifying lens in space -- a massive cluster of galaxies -- to narrow in on the nature of dark energy. Their calculations, when combined with data from other methods, significantly increase the accuracy of dark energy measurements. This may eventually lead to an explanation of what the elusive phenomenon really is.


http://www.jpl.nasa.gov/news/news.cfm?release=2010-272 (http://www.jpl.nasa.gov/news/news.cfm?release=2010-272)

The team measured the properties of the gravitational lensing in the galaxy cluster Abell 1689. Gravitational lensing is a phenomenon predicted by Einstein's theory of general relativity
http://www.sciencedaily.com/releases/2010/08/100819141917.htm (http://www.sciencedaily.com/releases/2010/08/100819141917.htm)
Title: Re: Dark Energy
Post by: johan3000 on 24 August 2010, 09:08:07 PM
kalau black hole termasuk dalam dark energy gak?

black hole kan gak bisa dilihat, karna menyesot semua cahaya. Tapi manusia pinter.... mengamatin kalau ada sekelompok bintang yg hilang (baca : terlelan black hole)... nah disitu tempatnya black hole...

8)
Title: Re: Dark Energy
Post by: kullatiro on 24 August 2010, 09:10:21 PM
kalau black hole rasanya itu gravitasi bintang dah jadi nya nanti bintang putih yang cebol itu
Title: Re: Dark Energy
Post by: Jerry on 25 August 2010, 05:44:19 AM
Quote from: johan3000 on 24 August 2010, 09:08:07 PM
kalau black hole termasuk dalam dark energy gak?

black hole kan gak bisa dilihat, karna menyesot semua cahaya. Tapi manusia pinter.... mengamatin kalau ada sekelompok bintang yg hilang (baca : terlelan black hole)... nah disitu tempatnya black hole...

8)

Blackhole TIDAK benar-benar BLACK.