Dark energy found in early universe
Posted: Fri, Nov 17, 2006, 7:37 AM ET (1237 GMT)
Dark energy, the mysterious force that is causing the expansion of the universe to accelerate, has existed in the universe for at least nine billion years, astronomers said Thursday. Astronomers used the Hubble Space Telescope to study a class of supernovae that serve as "standard candles", allowing astronomers to measure their distance and the rate of expansion of the universe. The study showed that dark energy existed as far back as nine billion years ago, or less than five billion years after the Big Bang, and at a strength similar to today. The results are consistent with a "cosmological constant" initially proposed by Albert Einstein, although scientists said they're still not sure what generates the dark energy.
Dark energy, the mysterious force that is causing the expansion of the universe to accelerate, has existed in the universe for at least nine billion years, astronomers said Thursday. Astronomers used the Hubble Space Telescope to study a class of supernovae that serve as "standard candles", allowing astronomers to measure their distance and the rate of expansion of the universe. The study showed that dark energy existed as far back as nine billion years ago, or less than five billion years after the Big Bang, and at a strength similar to today. The results are consistent with a "cosmological constant" initially proposed by Albert Einstein, although scientists said they're still not sure what generates the dark energy.
Related Links:
| <<previous article | next article>> |
|
news in brief
|
|
Report outlines cost growth in canceled NASA exploration programs
Posted: Sat, Jun 27 11:14 AM ET (1514 GMT) Perseverance Mars rover finds more potential biosignatures
Posted: Sat, Jun 27 11:12 AM ET (1512 GMT) |
|
news links
|
|
Monday, June 29
Has Rocket Lab launched us across political threshold?
Radio New Zealand — 5:46 am ET (0946 GMT) SpaceX launches rocket from Vandenberg Space Force Base Sunday morning
KSBY-TV San Luis Obispo, CA — 5:42 am ET (0942 GMT) SpaceX Valuation and Defense Demand Could Spark a Space-Tech IPO Wave in Warsaw, Creotech CEO Says
Bloomberg News — 5:42 am ET (0942 GMT) The Exploration Company is Recruiting for Its Nyx Crew Team in Houston
European Spaceflight — 5:36 am ET (0936 GMT) Euclid studies Milky Way center, supports future Roman observations
NasaSpaceFlight.com — 5:34 am ET (0934 GMT) |
