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Latest Astronomy on Mars Stories

Deimos Orbital Model Improved
2012-09-26 10:27:22

April Flowers for redOrbit.com - Your Universe Online 135 years ago, a scientist named Asaph Hall discovered Phobos and Deimos, two small moons orbiting Mars. Since then, the moons have been photographed innumerable times from Earth and from spacecraft, including recent measurements by the Mars Exploration Rovers panoramic cameras and the Mars Reconnaissance Orbiter. The orbit of Phobos, the inner moon, has been calculated to an accuracy of less than 1 kilometer. But, despite this...

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2012-09-06 16:22:17

Lee Rannals for redOrbit.com — Your Universe Online Researchers from the Niels Bohr Institute have dated climate history for Mars for the first time. The ice caps on Mars' poles are miles thick, composed of ice and dust and contain layers that can be seen in cliffs and valley slopes. The layers are believed to reflect past climate on Mars, in the same way that Earth's climate history can be seen from the ice caps on Greenland and Antarctica. The scientists were able to...

Meteor Shower To Coincide With 'Supermoon' This Weekend
2012-05-05 12:21:09

Peak viewing conditions for the Eta Aquarid meteor shower, which occurs annually when Earth passes through the debris trail from Halley's Comet, will begin on the evening of May 5 and last until the early morning hours on May 6, NASA officials announced earlier this week. The meteor shower, which is caused by the cosmic debris from the comet burning up in our planet's atmosphere, produces between 40 and 60 meteors per hour under ideal conditions, the US space agency said in a statement on...

Venus, Mars Top Stargazing Attractions For April
2012-04-01 05:35:25

Venus's rendezvous with the Pleiades star cluster and the increasing prominence of Mars in the east-southeast part of the sky mark two of the highlights for stargazers to enjoy during the month of April. According to Joe Rao of Space.com, Earth's so-called sister planet will be visible near the star cluster known as the Seven Sisters in the west-northwestern part of the sky on Tuesday, April 3. Venus will pass within a half-degree to the south of the Pleiades that evening, Rao said. The...

Working Models For Phobos Gravitational Fields Updated
2012-03-05 05:05:42

Phobos is the larger and closer of the two natural satellites of Mars. Despite decades of Martian exploration, we still know very little about Phobos. Many fundamental properties of this small potato-shaped body stay vague, for example, its gravitational field. SHI Xian and coauthors from Shanghai Astronomical Observatory and Technical University Berlin recently updated working models for the gravitational field of Phobos. Their work, entitled "Working models for the gravitational field of...

Image 1 - Weekend Meteor Shower
2011-10-21 04:19:58

Earth is about to pass through a stream of debris from Halley's comet, source of the annual Orionid meteor shower.  Forecasters expect more than 15 meteors per hour to fly across the sky on Saturday morning, Oct. 22nd, when the shower peaks. "Although this isn't the biggest meteor shower of the year, it's definitely worth waking up for," says Bill Cooke of the NASA Meteoroid Environment Office. "The setting is dynamite." Orionids are framed by some of the brightest and most...

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2011-05-10 09:45:00

Have you ever woken up at the crack of dawn, shuffled to the kitchen counter for your first cup of joe, only to discover that you're out of coffee beans? Cruel. This week it's not a problem, because there's something to open your eyes even better than coffee. Four bright planets are aligning in the morning sky. Look out any east-facing window about a half hour before sunrise. If you have a clear view of the horizon, you'll see Mercury, Venus, Mars and Jupiter clustered together in a patch of...

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2010-08-25 06:50:00

It spreads, it mutates, it refuses to die. For the seventh year in a row, the Mars Hoax is infecting email boxes around the world. Passed from one reader to another, the message states that on August 27th Mars will approach Earth and swell to the size of a full Moon. "NO ONE ALIVE TODAY WILL EVER SEE THIS AGAIN," the email declares--always in caps. News flash: It's not true. Here are the facts. On August 27, 2010, Mars will be 314 million km from Earth, about as far away as it can get. Mars...

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2010-08-12 11:30:00

The annual Perseid meteor shower this week is predicted to be a grand event with peak viewing times Thursday night August 12 into the early pre-dawn hours Friday August 13. According to NASA, the shower may produce a display of up to 80 meteors an hour. For best views of the event, experts are urging spectators to get as far away from city lights as possible. The Perseid meteor shower has been ongoing for about a week and peak times were set for Wednesday night into Thursday morning, and...

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2010-06-03 12:40:00

People living in the northern hemisphere will be able to go out any night this week an hour after sunset and see Venus, Saturn and Mars. The planet Venus will be located slightly north of west, in the constellation Gemini.  To the left of Venus appearing in the constellation Leo, skywatchers will be able to spot Mars.  Then, further to the left of Mars will be Saturn shining in the western part of the constellation Virgo. All three planets will appear across a 71-degree angle in...


Latest Astronomy on Mars Reference Libraries

7_9ed77167bb9b6f0379e955473d8eead32
2004-10-19 04:45:43

Positional Astronomy -- Positional astronomy is the study of the positions of celestial objects. This is the oldest branch of astronomy and dates back to antiquity. Observations of celestial objects are important for religious and astrological purposes, as well as for timekeeping. Ancient structures associated with positional astronomy include: -- Chichn Itz -- The Medicine Wheel -- The Pyramids -- Stonehenge -- The Temple of the Sun The unaided human eye can...

4_c4d3c824e14b01f0a42ed26fd3aa94142
2004-10-19 04:45:41

Perseids Meteor Shower -- Like most meteor showers, the Perseids are caused by comet debris. As comets enter the inner solar system, they are warmed by the sun and peppered by the solar wind, which produces the familar tails that stretch across the night sky when a bright comet is close to Earth. Comet tails are made of tiny pieces of ice, dust, and rock which are spewed into interplanetary space as they bubble off the comet's nucleus. When Earth encounters these particles on its...

4_e0f932ed4e92d817020bb78521ddbe5c2
2004-10-19 04:45:41

The Moon -- The Moon is the largest satellite of the Earth, and is occasionally called Luna (Latin for moon) to distinguish it from the general use of the word "moon". The Moon is distinguished from the satellites of other planets by its initial capital letter; the other moons are described in the natural satellite article. The words moon and month come from the same Old English root word. The Moon makes a complete orbit of the celestial sphere about every four weeks. Each hour the...

4_81f631e16d8d1d35870c180f342c83a12
2004-10-19 04:45:40

The Planet Mars -- in astronomy, 4th planet from the sun, with an orbit next in order beyond that of the earth. Physical Characteristics Mars has a striking red appearance, and in its most favorable position for viewing, when it is opposite the sun, it is twice as bright as Sirius, the brightest star. Mars has a diameter of 4,200 mi (6,800 km), just over half the diameter of the earth, and its mass is only 11% of the earth's mass. The planet has a very thin atmosphere consisting...

4_c91b1dfe41863cf4e6fae5fdc43cefe32
2004-10-19 04:45:40

Mars' Moon Phobos -- in astronomy, innermost moon, or natural satellite, of Mars. Phobos orbits Mars at a distance of only 9,378 km (5,627 mi), closer to its planet than any other moon in the solar system. In fact, it is so close that the force of Mars's gravity is stronger than the force keeping the moon in its orbit, so the radius of Phobos's orbit is decreasing at the rate of about 1.8 m (about 6 ft) per century. In 40 million years, Phobos will either break apart into a ring...

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