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Earth To Mars, Just How Far Is It?
2013-02-11 08:41:26

Alan McStravick for redOrbit.com - Your Universe Online If you´ve ever had an inquisitive child ask you how far Mars is from Earth and you were unsure how to answer then, you are not alone. On their individual courses around our Sun, Mars and Earth follow an elliptical orbit. Imagine two race cars traveling on two different tracks at differing speeds. This analogy helps you visualize how sometimes these two planets are close together while at other times they are, quite literally,...

'Supermoon' Expected This Weekend
2012-05-05 15:05:08

The biggest and brightest full moon of the year will occur this weekend. An estimated 16% brighter than normal, this spectacular ℠Supermoon´ will be visible in the night sky on Saturday (May 5) at 11:35 p.m. EDT, according NASA. Click here for video. The scientific term for the phenomenon is "perigee moon." Full Moons vary in size because of the oval shape of the Moon's orbit. The Moon follows an elliptical path around Earth with one side ("perigee") about 50,000 km closer than...

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2011-03-17 08:30:00

Author: Dr. Tony Phillips | Credit: Science @ NASA Mark your calendar. On March 19th, a full Moon of rare size and beauty will rise in the east at sunset. It's a super "perigee moon"--the biggest in almost 20 years. "The last full Moon so big and close to Earth occurred in March of 1993," says Geoff Chester of the US Naval Observatory in Washington DC. "I'd say it's worth a look." Full Moons vary in size because of the oval shape of the Moon's orbit. It is an ellipse with one side (perigee)...

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2008-07-17 08:15:00

Starting this week, spacecraft controllers have been executing a series of maneuvers to gradually bring Venus Express closer to its host planet. In its modified orbit, the spacecraft will be able to observe unexplored regions and investigate phenomena that were not within its reach before. The operational maneuvers to bring the spacecraft closer will be executed through the month of July, settling it into its new orbit by 4 August. Until now, Venus Express has occupied a highly eccentric...


Latest Apsis Reference Libraries

6_15cc05865f89c4801c5ff2a85d74a93c2
2004-10-19 04:45:42

Orbit -- An orbit is the path that an object makes around another object under the influence of some force. The classical example is that of the solar system, where the Earth, other planets, asteroids, comets, and smaller pieces of rubble are in orbit around the Sun; and moons are in orbit around planets. These days, many artificial satellites are in orbit around the Earth. Understanding orbits There are a few common ways of understanding orbits. -- As the object moves, it...

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Word of the Day
tessitura
  • The prevailing range of a vocal or instrumental part, within which most of the tones lie.
This word is Italian in origin and comes from the Latin 'textura,' web, structure.