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HiRISE image of Stickney Crater on Phobos. Credit: NASA/JPL/University of Arizona. Stickney crater is almost half the diameter of Phobos itself. Why did the impact not shatter this small moon? The color picture above is a composite from two pictures taken about 10 minutes apart in order to give the 3-dimensional aspect. A recent Picture of the Day described some of the large-scale formations on Phobos, especially Stickney Crater, but this more dramatic picture, which has recently become available, deserves another showing because it portrays the distinctive features of an Electric Discharge Machining (EDM) event with greater clarity. The...

The Time Traveler appeared suddenly in my study on New Year’s Eve, 2004. He was a stolid, grizzled man in a gray tunic and looked to be in his late-sixties or older. He also appeared to be the veteran of wars or of some terrible accident since he had livid scars on his face and neck and hands, some even visible in his scalp beneath a fuzz of gray hair cropped short in a military cut. One eye was covered by a black eyepatch. Before I could finish dialing 911 he announced in a husky voice that he was...

Mystery Object Encountered By Russian Phobos Spacecraft by Tom Van Flandern, Astronomer Meta Research Martian moon Phobos and "Phobos Mystery Object", photographed in 1989 by a Russian spacecraft not long before all contact was lost. March 15, 1992 was the cover date on the first issue of a new astronomy research publication, the Meta Research Bulletin (MRB). Its purpose was to draw attention to deserving astronomy findings and ideas ignored solely because they did not fit well into mainstream models of the field. Such mainstream models include the Big Bang, the primeval Destination: Space nebula, the Oort cloud, and the...

Europe's Mars Express spacecraft has taken its most detailed image yet of the Red Planet's largest moon, Phobos. The photo was taken from a distance of about 200km (124 miles) from the irregular-shaped satellite and shows the side of the object that faces Mars. Scientists hope to explain the origin of a network of grooves that extend from the equator to the north pole. Phobos is slowly falling down to Mars and is expected to crash into the planet in the next few million years.

Reworked images reveal hot Venus By Dr David Whitehouse Mars it is not: Reprocessed Venus image As the world looks at Mars, an American scientist has produced the best images ever obtained from the surface of a rather different planet - Venus. The second planet from the Sun is blanketed with a thick layer of cloud. Computer researcher Don Mitchell used original digital data from two Soviet Venera probes that landed in 1975. His reprocessed and recalibrated images provide a much clearer view of the Venusian surface which is hotter even than the inside of a household oven. Original digital...

Without the Moon, there would have been no life on Earth. Four billion years ago, when life began, the Moon orbited much closer to us than it does now, causing massive tides to ebb and flow every few hours. These tides caused dramatic fluctuations in salinity around coastlines which could have driven the evolution of early DNA-like biomolecules. This hypothesis, which is the work of Richard Lathe, a molecular biologist at Pieta Research in Edinburgh, UK, also suggests that life could not have begun on Mars. According to one theory for the origin of life, self-replicating molecules such as DNA...

Astronomy Picture of the Day Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2003 November 29 Phobos Over Mars Credit: Viking Project, JPL NASA Explanation: Hurtling through space a mere 3,000 miles above the Martian surface, the diminutive moon Phobos (below and left of center) was imaged against the backdrop of a large shield volcano by the Viking 2 Orbiter in 1977. This dramatic picture looks down from the Orbiter's viewpoint about 8,000 miles above the volcano, Ascraeus Mons. Phobos itself...

Astronomy Picture of the Day Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2003 October 24 Mars Moons Credit & Copyright: Johannes Schedler (Panther Observatory) Explanation: This year's record close approach of Mars inspired many to enjoy telescopic views of the red planet. But while Mars was so bright it was hard to miss, spotting Mars' two diminutive moons was still a good test for observers with modest sized instruments. Mars' moons were discovered in August of 1877 by Asaph Hall...

New Theory: Catastrophe Created Mars' Moons By Leonard David Senior Space Writer posted: 07:00 am ET 29 July 2003 PASADENA, California – The two moons of Mars – Phobos and Deimos – could be the byproducts of a breakup of a huge moon that once circled the red planet, according to a new theory. The capture of a large Martian satellite may have taken place during or shortly after the formation of the planet, with Phobos and Deimos now the surviving remnants. Origin of the two moons presents a longstanding puzzle to which one researcher proposed the new solution at...

Astronomy Picture of the Day Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2003 July 1 Martian Moon Phobos from MGS Credit: Malin Space Science Systems, MGS, JPL, NASA Explanation: Why is Phobos so dark? Phobos, the largest and innermost of two Martian moons, is the darkest moon in the entire Solar System. Its unusual orbit and color indicate that it may be a captured asteroid composed of a mixture of ice and dark rock. The above picture was captured recently...

Astronomy Picture of the Day Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2003 April 6 Phobos: Doomed Moon of Mars Credit: Viking Project, JPL, NASA; Image mosaic by Edwin V. Bell II (NSSDC/Raytheon ITSS) Explanation: This moon is doomed. Mars, the red planet named for the Roman god of war, has two tiny moons, Phobos and Deimos may well be captured asteroids originating in the main asteroid belt between Mars and Jupiter or perhaps from even more distant reaches of...

Astronomy Picture of the DayDiscover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2003 March 29 The Shadow of Phobos Credit: Malin Space Science Systems, MGS, JPL, NASA Explanation: Hurtling through space above the Red Planet, potato-shaped Phobos completes an orbit of Mars in less than eight hours. In fact, since its orbital period is shorter than the planet's rotation period, Mars-based observers see Phobos rise in the west and set in the east - traveling from horizon to horizon in about...