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                                                                    Hubble Space Telescope (HST)                                          

Has the Speed of Light Changed Over Time?
Australian theoretical physicist, Professor Paul Davies, has proposed that one of the so-called "constants" of the universe -- the speed of light -- has in fact slowed over time, a revelation that will cause a rethink of many of our accepted laws of physics as well as our "understanding" of the beginning of the universe.

Latest Results in Continuing Search for Ancient Martian Life
In the latest study of a 4.5 billion-year-old Martian meteorite, researchers have presented new evidence confirming that 25 percent of the magnetic material in the meteorite was produced by ancient bacteria on Mars.

Pluto's Atmosphere is Changing
New findings by astronomers from Lowell Observatory and the Massachusetts Institute of Technology (MIT) indicate that Pluto's atmosphere is undergoing a cooling trend and other global changes.

Earth's Oldest Known Meteorite Impact
A team of geologists has determined the age of the oldest known meteorite impact on Earth - a catastrophic event that generated massive shockwaves across the planet billions of years before a similar event helped wipe out the dinosaurs.

Speed of Gravity to be Measured
Ever since Albert Einstein proposed the general theory of relativity in 1916, physicists worldwide have tested the theory's underlying principles. While some principles - such as the speed of light is a constant - have been proven, others have not. An experiment will soon seek to prove whether the speed of gravity is equal to that of light.

The Sun's Twisted Mysteries
Solar physicists have found new clues to the thirty year old puzzle of why the Sun ejects huge bubbles of electrified gas, laced with magnetic field, known as coronal mass ejections (CMEs). The key to understanding CMEs, which can cause electricity black outs on Earth, may be due to twisted magnetic fields originating deep within the heart of the Sun.

Global Fires Followed Ancient Impact Event
Global wildfires ignited by high-velocity debris from the catastrophic impact of an asteroid or comet with Earth 65 million years ago spread over southern North America, the Indian subcontinent and most of the equatorial part of the world one to three days after impact, according to a new study.

Comets Break Up Far and Near
Some comets may break apart over and over again in the farthest reaches of the solar system, challenging a theory that comets break up only occasionally and not too far from the Sun.

Star cluster offers clues on Milky Way's evolution
New observations of the richly populated star cluster NGC 2420 taken by the refurbished WIYN 0.9-meter telescope at Kitt Peak National Observatory suggest that the cluster contains a multitude of clues about the history and evolution of the Milky Way.

Jupiter-like Weather on Brown Dwarfs
A UCLA-NASA team has found cloudy, stormy atmospheres on brown dwarfs, the celestial bodies that are less massive than stars but have more mass than giant planets like Jupiter. The discovery will give scientists better tools for interpreting atmospheres and weather on brown dwarfs or on planets around other stars.

Another Major Mars Water Announcement Coming Soon
Dr. Jim Garvin, Lead Scientist of NASA's Mars Exploration Program said today that a major announcement is forthcoming about the presence of water ice just under the surface of Mars. NASA has scheduled a Space Science update for next Thursday for 12:00 noon - which is suggestive of the time a press embargo would lift for an article appearing in Science magazine.

Europa Has Right Stuff
Recent work by Dr. Elisabetta Pierazzo, at the Planetary Science Institute, and Dr. Christopher Chyba of the SETI Institute, sheds light on the question of whether enough "biogenic elements," the raw ingredients for life, including carbon, nitrogen, sulfur and phosphorus, could be present to support Europan life.

Closest Brown Dwarf Companion Ever Spotted
Astronomers using adaptive optics technology on the Gemini North Telescope have observed a brown dwarf orbiting a low-mass star at a distance comparable to just three times the distance between the Earth and Sun. This is the closest separation distance ever found for this type of binary system using direct imaging.

Pictures from Hubble's new Camera Stuns Astronomers
After the March servicing mission of the Hubble Space Telescope astronomers have been anxiously waiting for the first pictures from Hubble. Today NASA released the first series of pictures and astronomers are jubilant. Hubble's new Advanced Camera for Surveys (ACS) is working better than expected. Hubble can now see at least 10 times farther than it used to.

Amino Acids from Interstellar Space
A team of scientists including SETI Institute and NASA researchers today announced the successful creation of amino acids, chemicals essential to life, in a laboratory simulation of conditions found in deep space. The team reproduced the freezing conditions that exist in the gigantic interstellar clouds of dust, gas, and ice that are the birthplaces of new stars and planetary systems.

The Disturbed Spiral Galaxy NGC 7673
The disturbed spiral galaxy NGC 7673 is ablaze with the light from millions of new stars. Each of its infant giant blue star clusters shines 100 times as brightly in the ultraviolet as similar immense star clusters in our own Galaxy.

Was Mars Carved by Liquid Carbon Dioxide?
Scientists have provided new evidence that liquid carbon dioxide, not running water, may have beeen the primary cause of erosional features such as gullies, valley networks, and channels that cover the surface of Mars.

A Bright Comet Returns - 341 Years Later
A comet discovered last month by amateur astronomers is making its first pass through the inner solar system in nearly 3-1/2 centuries. Named Ikeya-Zhang for the two keen-eyed skygazers who first spotted it, this cosmic interloper can be seen low in the west, not far above the horizon, as soon as it gets dark.

NASA's Mars Odyssey Unveils Early Science Results
Initial science data from NASA's Mars Odyssey spacecraft, which began its mapping mission last week, portend some tantalizing findings by the newest Martian visitor, including possible identification of significant amounts of frozen water. Initial measurements by the gamma-ray spectrometer instrument suite show the presence of significant amounts of hydrogen in the south polar region of Mars. The high hydrogen content is most likely due to water ice, though the amount of ice cannot be quantified yet. Further analysis will be conducted to confirm the interpretation.

Chandra's X-ray View of Jupiter
A pulsating hot spot of X-rays has been discovered in the polar regions of Jupiter's upper atmosphere by NASA's Chandra X-ray Observatory. Previous theories cannot explain either the pulsations or the location of the hot spot, prompting scientists to search for a new process to produce Jupiter's X-rays.

Asteroids - Not Comets - Resurfaced Earth
The bombardment that resurfaced the Earth 3.9 billion years ago was produced by asteroids, not comets. The significance of this conclusion is that the bombardment was so severe that it destroyed older rocks on Earth which is the reason why the oldest rocks found are less than 3.9 billion years old.

Huge Cloud of Volcanic Gas Surrounds Jupiter
A huge cloud of gas, spewed from volcanos on one of Jupiter's moons, extends into space to a distance that is almost equal to that of the earth from the sun, says a new report published in the journal Nature.

Evidence of Molten Core Within Earth's Moon
Love numbers -- measures of how much a planet's surface and interior move in response to the gravitational pull of nearby bodies -- may indicate that the Moon has something like a molten slush surrounding its core, say researchers at NASA's Jet Propulsion Laboratory, Pasadena, Calif.

Hubble Finds "Backwards" Spiral Galaxy
To the surprise of astronomers, the galaxy, called NGC 4622, appears to be rotating in the opposite direction to what they expected. Pictures by NASA's Hubble Space Telescope helped astronomers determine that the galaxy may be spinning clockwise by showing which side of the galaxy is closer to Earth.

The above information is excerpts from SpaceRef.com, a great reference site - check it out!


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