Space
- Space
Last Hubble rendezvous
During five successful space walks, astronauts repaired and rejuvenated the Hubble Space Telescope.
- Space
Cosmic dustup settles
Two new studies document how crystalline dust forms in the hot, inner part of a young star’s planet-making disk and then gets incorporated into the cold, comet-forming region billions of kilometers away.
- Space
Final Hubble repair mission begins
The final mission to repair and upgrade the Hubble Space Telescope lifted off May 11.
- Astronomy
New eyes on the cosmos
The next constellation of telescopes will dramatically extend and sharpen scientists’ view of the universe.
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- Tech
White House commissions spaceflight-review panel
Outside experts are being asked to advise NASA on how to get astronauts into space after the shuttle program dies next year.
- Space
Honing the Hubble constant
Revised value supports finding that dark energy does not vary with time.
- Space
Using dead stars to spot gravitational waves
Astronomers are proposing a novel way to detect gravitational waves using ultraprecise observations of already known stars.
- Earth
U.S. radiation dose has doubled
New analysis finds radiation-based medical procedures have skyrocketed.
- Space
Origin of high-energy cosmic rays more mysterious, again
The origin of the rare, energetic particles that previous evidence indicated came from galaxies that house supermassive black holes, is now much less certain.
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