LYCOS RETRIEVER 
Search Results for "mars polar lander"
There are 11 Retriever pages mentioning "mars polar lander":
- Mars -- Rocks
During four months prior to the fourth anniversary of its landing on Mars, Opportunity examined rocks inside an alcove called "Duck Bay" in the western portion of Victoria Crater. Opportunity landed on Jan. 25, 2004, Universal Time, (Jan. 24, Pacific Time). - Mars -- Surfaces
At present Mars does not have a global magnetic field of appreciable strength. However, early in its history Mars must have had a more substantial magnetic field, because its near-surface rocks exhibit strong remanent magnetism. See ... Rock magnetism. - Planet Mars -- Red Planet Mars
A new theory about ancient Mars puts some fizz back in the idea that the red planet was once warm, wet and potentially habitable. Many studies have suggested that early Mars was covered by large oceans and blanketed by a thick atmosphere rich in carbon dioxide -- the stuff that puts the bubbly zing in soda. But if that's all true, then when the oceans evaporated a lot of the carbon dioxide should have turned into what scientists call carbonates, which should be strewn all over the place. Problem is, the carbonates aren't there. One recent study found trace amounts in Martian dust, just enough to conclude that Mars probably didn't have vast oceans. The new model provides a way around this problem. - Planet Mars -- Planet Earth
The axis of Mars is not perpendicular to the planet's orbital plane, an imaginary plane that includes all points in the orbit. Rather, the axis is tilted from the perpendicular position. The angle of the tilt, called the planet's obliquity, is 25.19¡ for Mars, compared with 23.45¡ for Earth. The obliquity of Mars, like that of Earth, causes the amount of sunlight falling on certain parts of the planet to vary widely during the year. As a result, Mars, like Earth, has seasons. - Mars (God) -- Planets
Until the arrival of planetary probes, the traditional view of Mars derived from the astronomers Percival Lowell and Giovanni Schiaparelli, whose observation of supposedly linear features on the planet created the myth of canals on Mars. For many years, a standard notion of the planet as a drying, cooling, dying world with ancient civilizations constructing irrigation works. Thus originated a large number of science fiction scenarios, the best known of which is H. G. Wells' The War of the Worlds, in which Martians seek to escape their dying planet by invading Earth. In the movie Mars Attacks! the Martians ... invade Earth. - Phoenix
In ancient Egyptian mythology and in myths derived from it, the Phoenix is a female mythical sacred firebird with beautiful gold and red plumage. Said to live for 500 or 1461 years (depending on the source), at the end of its life-cycle the phoenix builds itself a nest of cinnamon twigs that it then ignites; both nest and bird burn fiercely and are reduced to ashes, from which a new, young phoenix arises. The new phoenix embalms the ashes of the old phoenix in an egg made of myrrh and deposits it in Heliopolis ("the city of the sun" in Greek), located in Egypt. The bird was ... said to regenerate when hurt or wounded by a foe, thus being almost immortal and invincible - a symbol of fire and divinity. - Weights and Measures
National Weights and Measures Week commemorates the anniversary of the date when President John Adams signed the first weights and measures law in the United States on March 2, 1799. The week was set aside to familiarize the public with this important service. - 433 Eros
Eros, or more specifically 433 Eros, is an asteroid. Unlike most asteroids that orbit between Mars and Jupiter in the Asteroid Belt, 433 Eros orbits around the sun and then passes earth, thereby providing plenatary geologists a unique opportunity to study an asteroid up close. In anticipation of this Earth pass by a mission was launched, sending a spacecraft to meet and rendezvous with Eros. On 14 February 2000, the Near Earth Asteroid Rendezvous (NEAR) Spacecraft entered orbit around 433 Eros where it remained for a year before landing on the surface, becoming the first fact-finding scientific instrument to successfully and on a small body, such as an asteroid, and send back information to a team of waiting scientists. Amoung the information sent back was the discovery that Eros has less concentrations of the element sulfer (S) than other asteroid. There are two theories for this sulfer depletion: tiny meteorite impacts caused the sulfer to turn to gas, or, the asteroid being partially melted, caused the sulfer to sink to the center and then lost during eruptions. - Spacecraft Propulsion
Wickman Spacecraft & Propulsion Company (WSPC) is designing a responsive and low cost SLV that uses a unique solid rocket motor that gives the SLV versatile performance and low cost. The SLV's propellant is WSPC's high performance, environmentally friendly, low cost, phase stabilized ammonium nitrate (PSAN) space booster propellant. Its unique SLV solid rocket motors provide real time controllable thrust with a unique expansion-deflection (E-D) exit cone. The E-D exit cone concept has been verified by CFD analysis and solid rocket motor static firings (shown lower left). The E-D exit cone ... provides optimum expansion of the exhaust gases at all altitudes. This enables WSPC's SLV to be ground launched or air launched (shown right). - Titan (Moon) -- Surface
An alternate explanation for life's hypothetical existence on Titan has been proposed: if life were to be found on Titan, it would be statistically more likely to have originated from Earth than to have appeared independently, a process known as panspermia. It is theorized that large asteroid and cometary impacts on Earth's surface have caused hundreds of millions of fragments of microbe-laden rock to escape Earth's gravity. Calculations indicate that a number of these would encounter many of the bodies in the solar system, including Titan.[80][81]