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We summarize the week's scientific breakthroughs every Thursday.
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AstronomyDark Doings
A slew of new and proposed experiments, ranging from the cosmic to the subatomic scale, may shed light on why the expansion of the universe is speeding up.
By Ron Cowen -
AstronomyBack to the Beginning: Hubble’s infrared camera goes the distance
Using the Hubble Space Telescope, researchers have identified 26 galaxies that may be the youngest and most distant known.
By Ron Cowen -
AstronomyClosing In on a Monster: A black hole’s dusty environs show themselves
The first clear picture of the immediate surroundings of a supermassive black hole confirms that these gravitational monsters hide behind thick belts of dust.
By Ron Cowen -
Planetary ScienceRovers in overtime
NASA has extended the missions of the twin Mars rovers by 5 months, through September 2004.
By Ron Cowen -
AstronomyPuzzle on the Edge: The moon that isn’t there
Contrary to predictions, Sedna, the most distant object known in the solar system, does not appear to have a moon.
By Ron Cowen -
AstronomyA galaxy that goes the distance?
Aided by a cosmic magnifying glass, astronomers may have found the most distant galaxy known, a body that appears to reside 13.2 billion light-years from Earth.
By Ron Cowen -
Planetary ScienceCassini spies storms on Saturn
Closing in on Saturn after a 7-year journey, the Cassini spacecraft has discovered two storms merging on the ringed planet, only the second times that scientists have observed such a phenomenon.
By Ron Cowen -
AstronomyRare Passage: Crab’s X rays probe Titan
Observing a rare celestial alignment, astronomers have made the first X-ray measurement of the atmosphere of Saturn's moon Titan.
By Ron Cowen -
AstronomySizing up a black hole
Astronomers are closing in on the size of the supermassive black hole that lies at our galaxy's center.
By Ron Cowen -
AstronomyShades of Venus
On June 8, for the first time in 122 years, the silhouette of Venus will move across the face of the sun.
By Ron Cowen -
Planetary ScienceMartian Methane: Carbon compound hints at life
The presence of methane in the Martian atmosphere spotlights the possibility that there might be primitive life on the Red Planet.
By Ron Cowen -
AstronomyForaging among the Galaxies: Andromeda’s dining habits are documented
A new survey is adding to the evidence that Andromeda, the Milky Way’s sister galaxy, has not only grown bigger in the past by feasting on smaller galaxies but is continuing to do so.
By Ron Cowen