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We summarize the week's scientific breakthroughs every Thursday.
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AstronomyWindy endeavor
In early April, an Earth-orbiting satellite closed its doors after more than 2 years of collecting ions from the solar wind.
By Ron Cowen -
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