News tagged with orbit
NASA completes Dream Chaser flight test milestone
(Phys.org) -- Sierra Nevada Corporation (SNC) Space Systems successfully completed a "captive carry test" of its full-scale Dream Chaser orbital crew vehicle Tuesday, marking a new milestone in the company's ...
Space & Earth / Space Exploration
Jun 01, 2012 |
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Research team uses a laser frequency comb to calibrate spectrographs
(Phys.org) -- In the never ending quest to find out if there is life out there beyond our own planet, astronomers, astrophysicists and other researchers use all manner of tools to scan the sky looking for ...
May 31, 2012 |
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Dragon arrives at space station in historic 1st (Update 2)
The privately bankrolled Dragon capsule made a historic arrival at the International Space Station on Friday, triumphantly captured by astronauts wielding a giant robot arm.
Space & Earth / Space Exploration
May 25, 2012 |
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Asteroid nudged by sunlight: Most precise measurement of Yarkovsky effect
Scientists on NASA's asteroid sample return mission, Origins, Spectral Interpretation, Resource Identification, Security, Regolith Explorer (OSIRIS-REx), have measured the orbit of their destination asteroid, ...
Space & Earth / Space Exploration
May 24, 2012 |
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Beam them up: Ashes of 'Star Trek' actor in orbit
(AP) -- James Doohan, Scotty from "Star Trek," spent his acting career whizzing through the cosmos. Gordon Cooper was one of America's famous Mercury seven astronauts. And Bob Shrake spent his work life anonymously ...
Space & Earth / Space Exploration
May 22, 2012 |
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Capturing planets
(Phys.org) -- The discovery of planets around other stars has led to the realization that alien solar systems often have bizarre features - at least they seem bizarre to us because they were so unexpected. ...
May 22, 2012 |
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Cassini spots tiny moon, begins to tilt orbit
(Phys.org) -- NASA's Cassini spacecraft made its closest approach to Saturn's tiny moon Methone as part of a trajectory that will take it on a close flyby of another of Saturn's moons, Titan. The Titan flyby ...
Space & Earth / Space Exploration
May 22, 2012 |
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Astronomer urges researchers everywhere to study Venus transit
(Phys.org) -- Jay Pasachoff, Director of Hopkins Observatory, Chair of the Astronomy Department at Williams College and Field Memorial Professor of Astronomy, has written a commentary piece published in the ...
May 17, 2012 |
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NASA survey counts potentially hazardous asteroids
(Phys.org) -- Observations from NASA's Wide-field Infrared Survey Explorer (WISE) have led to the best assessment yet of our solar system's population of potentially hazardous asteroids. The results reveal ...
Space & Earth / Space Exploration
May 17, 2012 |
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Scientists measure Martian sand movement: Dune migration rates appear to be similar to those on Earth
Last year, images from NASA's Mars Reconnaissance Orbiter captured sand dunes and ripples moving across the surface of Mars—observations that challenged previously held beliefs that there was not a lot ...
Space & Earth / Space Exploration
May 09, 2012 |
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Hinode witnesses solar eclipse
(Phys.org) -- Spectacular images from the Hinode spacecraft show the solar eclipse, which darkened the sky in parts of the Western United States and Southeast Asia yesterday.
Space & Earth / Space Exploration
May 23, 2012 |
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NASA Goddard delivers magnetometers for next mission to Mars
Magnetometers built by scientists and engineers at NASA Goddard Space Flight Center in Greenbelt, Md. for NASA's Mars Atmosphere And Volatile EvolutioN (MAVEN) mission have been delivered to the University ...
Space & Earth / Space Exploration
May 21, 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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Space weather expert has ominous forecast
A stream of highly charged particles from the sun is headed straight toward Earth, threatening to plunge cities around the world into darkness and bring the global economy screeching to a halt.
Space & Earth / Space Exploration
May 08, 2012 |
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Maglev track could launch spacecraft into orbit
(PhysOrg.com) -- With the aim to make it easier to launch spacecraft into low Earth orbit (LEO), two researchers have turned to maglev technology to catapult a payload hundreds of miles above the Earth. While ...
Space & Earth / Space Exploration
Mar 13, 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.
