Category: Astronomy
11 March 1998
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ScienceNOW(Science - AAAS)
Asteroid Headed for Earth
Astronomers are tracking an asteroid, at least 1 kilometer wide, that could hit Earth in 2028. The orbit of the massive asteroid, known as 1997 XF11, was posted today on...
9 March 1998
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ScienceNOW(Science - AAAS)
Tuning In to a Distant Planet
The French astronomer who co-discovered the planet Neptune, Urbain Jean Joseph Leverrier, was born on this day in 1811. Based on hints that Uranus veered slightly from the orbit predicted...
4 March 1998
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ScienceNOW(Science - AAAS)
Seeing Red in the Outer Solar System
Large, cometlike objects that wander in the dark chill beyond Neptune may come in two colors, an unexpected dichotomy that may provide clues to the forces that shaped the outer...
3 March 1998
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ScienceNOW(Science - AAAS)
Boom and Bust at R Leonis
For the first time, astronomers have watched a variable star swell and shrink. The star, called R Leonis, brightens and dims on a year-long schedule, and an innovative array of...
2 March 1998
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ScienceNOW(Science - AAAS)
Spotting the Sun
This image within an image is the latest--and perhaps most stunning--view of last week's total solar eclipse. The blotchy orange portion is the solar surface and lower atmosphere as seen...
26 February 1998
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ScienceNOW(Science - AAAS)
Antigravity Force Pumps Up the Cosmos
Seemingly in defiance of common sense, the cosmos appears to be permeated by a repulsive force that is counteracting gravity on large scales. That is the reluctant conclusion of an...
25 February 1998
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ScienceNOW(Science - AAAS)
Clark Satellite Scrapped
NASA has canceled its remote-sensing Clark satellite, citing cost overruns and launch schedule delays. The long-expected decision, announced today, is a setback for NASA's new emphasis on fast and cheap...
25 February 1998
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ScienceNOW(Science - AAAS)
Old Parents for New Planets?
Astronomers have discovered the ingredients of planets in an unusual locale: the dusty disk surrounding an ancient binary star system. The finding, reported in tomorrow's Nature, is a surprise, because...
23 February 1998
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ScienceNOW(Science - AAAS)
Dyes, Planets, and Peas
Editor's Note: Today we revisit three ScienceThens, first posted last year. A Discovery to Dye For Tuesday, 24 February: Today is the birthday of Carl Graebe, a German organic chemist...
19 February 1998
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ScienceNOW(Science - AAAS)
Space Science Leader to Leave NASA
WASHINGTON, D.C.--Wesley Huntress, NASA's Associate Administrator for Space Science, announced yesterday that he will leave the agency before the end of the year. Huntress, who has managed NASA's programs in...
12 February 1998
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ScienceNOW(Science - AAAS)
Russians Foil Space Station Grab
MOSCOW--Russia's intelligence agency appears to have foiled a robbery that could have jeopardized the country's participation in the international space station. Last month, Russia's Federal Security Service (FSS) says it...
3 February 1998
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ScienceNOW(Science - AAAS)
NASA Budget Left Behind
WASHINGTON, D.C.--Although most federal research programs are in line for substantial budget hikes in President Clinton's R&D spending plan, released yesterday, NASA is a relative loser. But NASA Administrator Dan...
30 January 1998
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ScienceNOW(Science - AAAS)
Inspired by Sputnik
Tomorrow marks the 40th anniversary of the launch of Explorer 1, the first U.S. satellite to orbit the Earth. The 9-kilogram satellite was the U.S. response to the Soviet Union's...
30 January 1998
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ScienceNOW(Science - AAAS)
Space Station Deal Lauded, Lamented
WASHINGTON, D.C.--It took 4 years to hammer out an agreement for how 16 nations will build and operate the international space station, so most participants at the signing ceremony here...
27 January 1998
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ScienceNOW(Science - AAAS)
That Blinking Sun
The sun is covered in thousands of tiny hot spots, according to new observations from the Solar and Heliospheric Observatory (SOHO) satellite. These hot spots, as will be reported in...
27 January 1998
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ScienceNOW(Science - AAAS)
Hubble's New Captain
WASHINGTON, D.C.--The Hubble Space Telescope's operator will have a new director in September. NASA and the Association of Universities for Research in Astronomy, which runs the Baltimore-based Space Telescope Science...
15 January 1998
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ScienceNOW(Science - AAAS)
Rocket Man Redux
The word is out: It's all systems "go" for former astronaut and U.S. Senator John Glenn (D-OH), 76. NASA is expected to announce tomorrow that the grizzled space veteran can...
14 January 1998
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ScienceNOW(Science - AAAS)
Scanning Earth With Neutrinos
Experiments being built in Italy and Japan to study the sun could deliver a bonus for earth scientists. Meant to detect neutrinos, fleeting particles from the sun, these detectors should...
14 January 1998
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ScienceNOW(Science - AAAS)
White House to Ease NASA Money Crunch
While most R&D agencies are looking forward to a healthy boost in President Bill Clinton's 1999 budget request, NASA is an exception. Struggling with space station cost overruns and waning...
13 January 1998
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ScienceNOW(Science - AAAS)
Gregarious Galaxies in the Early Universe
WASHINGTON, D.C.--The great clusters and walls of galaxies that pattern the universe may date back practically to the big bang. By searching the neighborhood of distant quasars--galaxylike objects so bright...
12 January 1998
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ScienceNOW(Science - AAAS)
Close Encounters of the Stellar Kind
WASHINGTON, D.C.--Astronomers have honed their ability to forecast the motions of nearby stars--some of which, they have found, may pass close enough to our solar system to nudge distant comets...
9 January 1998
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ScienceNOW(Science - AAAS)
Basking in the Heat of the Universe
WASHINGTON, D.C.--Scientists have found new evidence for a cosmic infrared background radiation, a sort of fossil radiation thought to have been emitted during the earliest surge of star and galaxy...
9 January 1998
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ScienceNOW(Science - AAAS)
More Signs of an Endless Universe
WASHINGTON, D.C.--The universe contains too little mass for gravity to stop its expansion, astronomers announced at a press conference held here yesterday at the American Astronomical Society meeting. The finding,...
8 January 1998
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ScienceNOW(Science - AAAS)
Intruder in the Stardust
WASHINGTON, D.C.--Astronomers may have caught a glimpse of a newborn planet in its dusty nursery around a nearby star. New images from the Hubble Space Telescope reveal pronounced warps in...
7 January 1998
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ScienceNOW(Science - AAAS)
Far-Off Planet Makes a Comeback
"It looks like we're back to an ugly old planet," says David Gray. Nearly a year ago, the University of Western Ontario astronomer had issued a serious challenge to the...
7 January 1998
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ScienceNOW(Science - AAAS)
Weightier Case for Mega Black Hole in Milky Way
WASHINGTON, D.C.--A black hole more than 2 million times the mass of the sun almost certainly lurks at the heart of our Milky Way galaxy, according to two new lines...
31 December 1997
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ScienceNOW(Science - AAAS)
Closing In on a Giant Black Hole
A new analysis of x-rays streaming from the bright center of a galaxy has strengthened the case that a supermassive black hole lurks there. The x-rays imply that their source,...
30 December 1997
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ScienceNOW(Science - AAAS)
Red Rocket Man
The man who masterminded the Soviet Union's early triumphs in military and civilian rocketry was born today in 1906. Sergei Korolyov launched his first liquid-fueled rocket in 1933 and helped...
18 December 1997
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ScienceNOW(Science - AAAS)
Star Death, With Style
Striking new photos from the Hubble Space Telescope are giving astronomers insights into the deaths of ordinary stars like our sun. The images, released yesterday at a news conference at...
17 December 1997
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ScienceNOW(Science - AAAS)
Jousting With Space Junk
NASA should do more to prevent potentially catastrophic collisions between the space shuttle and orbiting chunks of space junk, says a report released today by the National Research Council (NRC)....
12 December 1997
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ScienceNOW(Science - AAAS)
No Reprieve for Greenwich Observatory
BRISTOL, UNITED KINGDOM--A last ditch plan to save the Royal Greenwich Observatory (RGO) has failed. Citing high risk and costs, the institution's funder, the Particle Physics and Astronomy Research Council...
4 December 1997
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ScienceNOW(Science - AAAS)
Vanishing X-rays Betray Black Hole
Many galaxies and quasars are thought to have a giant black hole at their center that sucks in matter and occasionally ejects high-speed streams of ultrahot gas. Now, a "microquasar"...
25 November 1997
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ScienceNOW(Science - AAAS)
Second Chance for Spartan Sun Gazers?
Space-walking astronauts last night successfully retrieved the malfunctioning Spartan solar-observing spacecraft, which was supposed to study the sun's outer atmosphere in tandem with another satellite. NASA managers say they might...
20 November 1997
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ScienceNOW(Science - AAAS)
A Discovery That Didn't Stop Growing
Today is the birthday of Edwin Hubble, an American astronomer born in 1889 who is famous for discovering that the universe contains galaxies outside of our own and is expanding....
17 November 1997
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ScienceNOW(Science - AAAS)
Universe Without End
There may be no stopping the expanding universe. Lately, observations of everything from galaxy clusters to distant exploding stars have favored an "open" universe, containing too little mass for gravity...
7 November 1997
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ScienceNOW(Science - AAAS)
X-rays Hint at Space Pirouette
Tiny wobbles in x-rays from matter being pulled toward neutron stars may be a sign that these spinning stars are dragging huge swaths of space with them. The findings, announced...
4 November 1997
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ScienceNOW(Science - AAAS)
A Reluctant Goodbye to Pathfinder
After almost a month of fruitless calls to Pathfinder on Mars, mission engineers are halting their round-the-clock efforts to resuscitate the lander. "I guess it's a reluctant goodbye," said mission...
4 November 1997
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ScienceNOW(Science - AAAS)
Gamma-Ray Halo Intrigues Astronomers
Astronomers have known for years that a powerful energy source at the core of the Milky Way is sending gamma-rays out through the entire galaxy, but now they're puzzling over...
31 October 1997
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ScienceNOW(Science - AAAS)
Telescope on Stilts
A revolutionary solar telescope caught its first rays this week at the Roque de los Muchachos Observatory on La Palma, Canary Islands. The 45-centimeter Dutch Open Telescope (DOT) could open...
31 October 1997
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ScienceNOW(Science - AAAS)
Two New Moons Around Uranus
There's no moon in the sky tonight for Halloween, but creatures of the night with powerful telescopes have two new targets: A team of astronomers announced today that it has...
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