News tagged with orbit
New views show old NASA Mars landers
(PhysOrg.com) -- The High Resolution Imaging Science Experiment (HiRISE) camera on NASA's Mars Reconnaissance Orbiter recorded a scene on Jan. 29, 2012, that includes the first color image from orbit showing ...
Space & Earth / Space Exploration
Feb 09, 2012 |
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When stars play planetary pinball
Many of us remember playing pinball at the local arcade while growing up; it turns out that some stars like it as well. Binary stars can play tug-of-war with an unfortunate planet, flinging it into a wide ...
Feb 08, 2012 |
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A bouncing moon boulder
One solitary boulder on the Moon apparently decided to take a little journey. The Lunar Reconnaissance Orbiter Camera captured the track of a bouncing, rolling 9-meter boulder that used to sit along the rim ...
Space & Earth / Space Exploration
Feb 08, 2012 |
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High planetary tilt lowers odds for life?
Highly-tilted worlds would have extreme seasons, subjecting life to alternating periods of scorching and subzero temperatures. This could make the development of all but hardiest, simplest creatures a long ...
Space & Earth / Space Exploration
Feb 06, 2012 |
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VIIRS eastern hemisphere image: Behind the scenes
(PhysOrg.com) -- The Suomi NPP satellite is in a polar orbit around Earth at an altitude of 512 miles (about 824 kilometers), but the perspective of the new Eastern hemisphere 'Blue Marble' is from 7,918 miles ...
Space & Earth / Space Exploration
Feb 03, 2012 |
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Iran launches observation satellite: media
Iran on Friday launched an observation satellite into orbit above Earth, its third since 2009, the official IRNA news agency reported.
Space & Earth / Space Exploration
Feb 03, 2012 |
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New super-earth detected within the habitable zone of a nearby star
(PhysOrg.com) -- An international team of scientists has discovered a potentially habitable super-Earth orbiting a nearby star. With an orbital period of about 28 days and a minimum mass 4.5 times that of ...
Feb 02, 2012 |
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Report identifies 16 highest priorities to guide NASA's Technology Development efforts for next 5 years
During the next five years, NASA technology development efforts should focus on 16 high-priority technologies and their associated top technical challenges, says a new report from the National Research Council. In addition, ...
Space & Earth / Space Exploration
Feb 01, 2012 |
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Canada looks to the future in space
When it comes to space, the first thing most people think of is NASA. Or Russia and the European Space Agency, or even more recently, countries like China and Japan. In the public eye, Canada has tended to ...
Space & Earth / Space Exploration
Feb 01, 2012 |
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IBEX spacecraft measures 'alien' particles from outside solar system
(PhysOrg.com) -- Using data from NASA's Interstellar Boundary Explorer (IBEX) spacecraft, an international team of researchers has measured neutral "alien" particles entering our solar system from interstellar ...
Space & Earth / Space Exploration
Jan 31, 2012 |
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Russia blames radiation for space probe failure
The head of Russia's space agency said Tuesday that cosmic radiation was the most likely cause of the failure of a Mars moon probe that crashed to Earth this month, and suggested that a low-quality imported ...
Space & Earth / Space Exploration
Jan 31, 2012 |
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NASA hopes to test new spaceship in 2014
There's no firm date yet, but sometime in early 2014 NASA intends to take its first major step toward rebuilding its human spaceflight program.
Space & Earth / Space Exploration
Jan 30, 2012 |
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Asteroid to make closest approach since 1975
On Tuesday, January 31, asteroid 433 Eros will come closer to Earth than it has in 37 years, traveling across the night sky in the constellations Leo, Sextans and Hydra. At its closest pass of 16.6 million ...
Space & Earth / Space Exploration
Jan 30, 2012 |
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Bus-sized asteroid shaves by Earth
An asteroid about the size of a bus shaved by Earth on Friday in what spacewatchers described as a "near-miss," though experts were not concerned about the possibility of an impact.
Space & Earth / Space Exploration
Jan 28, 2012 |
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SwRI-led RAD measures radiation from solar storm
The largest solar particle event since 2005 hit the Earth, Mars and the Mars Science Laboratory spacecraft travelling in-between, allowing the onboard Radiation Assessment Detector to measure the radiation a human astronaut ...
Space & Earth / Space Exploration
Jan 28, 2012 |
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Orbit
In physics, an orbit is the gravitationally curved path of one object around a point or another body, for example the gravitational orbit of a planet around a star.
Historically, the apparent motion of the planets were first understood in terms of epicycles, which are the sums of numerous circular motions. This predicted the path of the planets quite well, until Johannes Kepler was able to show that the motion of the planets were in fact elliptical motions.[citation needed] Isaac Newton was able to prove that this was equivalent to an inverse square, instantaneously propagating force he called gravitation.[citation needed] Albert Einstein later was able to show that gravity is due to curvature of space-time, and that orbits lie upon geodesics. This is the current understanding.
For more information about Orbit, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
