Astronomy

Astronomy

Controlling the speed of solar eruptions

The billion-ton blobs of magnetized gas that the sun sporadically hurls into space can't reach Earth in less than half a day.

Astronomy

Heavenly Passage

On June 8, the black dot of Venus passed across the face of the sun, the first time it did so in 122 years.

Astronomy

Powerhouse Astronomy: Blazing black hole from the early universe

A jet of matter and radiation emanating from a newly discovered black hole could provide a new probe of the first stars and the radiation left over from the Big Bang.

Astronomy

Variable quasar may help measure the cosmos

A flickering cosmic mirage, recorded for the first time in X rays, promises to provide a new estimate of how rapidly the universe is expanding.

Astronomy

Tracking Solar Activity

Part of the Student Observation Network, this NASA Web site offers information and activities related to solar flares and storms. Vividly illustrated online tutorials provide guidelines and background for observing sunspots, recording radio waves, collecting data from magnetometers, and viewing auroras. Learn how to make a sunspot viewer or magnetometer. See live images of the […]

Astronomy

Transit of Venus

On June 8, Venus will pass across the face of the sun (as viewed from Earth). Such a transit occurs rarely; the last one was in 1882. A variety of Web sites feature information about these transits and offer advice for observing and timing the 2004 event. Go to: http://www.venustransit.ie/ and http://sunearth.gsfc.nasa.gov/sunearthday/2004/index_vthome.htm

Astronomy

Young World: NASA telescope reveals clues to newborn planet

Astronomers have found signs of what may be the youngest planet known, plus the first signs ever of organic compounds in a region of dust that could evolve into a planet-forming region.

Astronomy

Huge solar flares hit far-flung craft

Spacecraft throughout the solar system have detected material spewed into space by a group of huge solar flares late last year.

Astronomy

Oddball asteroid

Astronomers have discovered an asteroid that takes only 6 months to go around the sun.

Astronomy

Cosmic Push: X-ray study confirms universe’s dark side

Culling clues from X rays emitted by distant clusters of galaxies, astronomers report new evidence that some mysterious force overcame gravity's tug about 6 billion years ago and ever since has been pushing galaxies apart at an accelerating rate.

Astronomy

Live! Venus’ transit on the Web

On June 8, astronomers in Europe plan to Webcast observations of the transit of Venus, the first time the planet has passed across the face of the sun as seen from Earth in 122 years.

Astronomy

Old Stars Even Older: Determining a new age for the universe

Using particles accelerators to mimic the conditions inside stars, two independent research groups have found evidence that the most-ancient known stars are about a billion years older than astronomers had estimated.