Space
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SolStation.com
Free for personal use . . . On-line Star Maps - Right click and drag to view the local stars in 3D. Double-click to learn more about notable nearby stars and to see orbit animations of multiple star and planetary satellite systems.The icy crust at the surface of Europa. Credit: NASA Jupiter’s icy moon Europa is subject to constant and significant blasts of radiation.
NASA Astrobiology
NASA Spitzer Space Telescope
Photography has, since its inception, been a staple of the art world. But the artistic significance of astronomical imagery has become increasingly evident in recent years through a variety of exhibitions falling at the intersection of astronomy and art. The latest of these is The History of Space Photography, on display at the Williamson Gallery at the Art Center College of Design in Pasadena through May 6th.
Interactive 3D model of Solar System Planets and Night Sky
• Most advanced and up-to-date Celestial Calculations by Jean Meeus - also used by NASA • Music by Travis Fitzsimmons • Spanish version by Ignacio Díez • Portuguese version by Rodrigo Ottero (special language characters are not supported) • Russian version by Sergey Leonov
The Scale of the Universe
This table shows a number of events in the history of the Universe and the Earth. This is expressed as occurring during a calendar year. The calendar year is assumed to be equivalent to 15,000,000,000 real years (which is probably too high a figure for the age of the Universe).
The Webb Space Telescope, Hubble's successor, will see in infrared, the light emitted by the farthest objects we can detect. Learn about Webb, its technology, and the science it will reveal.
HubbleSite - Out of the ordinary...out of this world.
Some cells are visible to the unaided eye The smallest objects that the unaided human eye can see are about 0.1 mm long. That means that under the right conditions, you might be able to see an ameoba proteus, a human egg, and a paramecium without using magnification. A magnifying glass can help you to see them more clearly, but they will still look tiny.
Cell Size and Scale
Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. Explanation: Have you contemplated your home star recently? Pictured above, a Sun partially eclipsed on the top left by the Moon is also seen eclipsed by earthlings contemplating the eclipse below. The above menagerie of silhouettes was taken from the Glenn Canyon National Recreational Area near Page , Arizona , USA , where park rangers and astronomers expounded on the unusual event to interested gatherers. Also faintly visible on the Sun's disk, just to the lower right of the dark Moon's disk , is a group of sunspots .
Astronomy Picture of the Day
NARRATOR: Now, on NOVA, take a thrill ride into a world stranger than science fiction, where you play the game by breaking some rules, where a new view of the universe pushes you beyond the limits of your wildest imagination. This is the world of "string theory," a way of describing every force and all matter from an atom to earth, to the end of the galaxies—from the birth of time to its final tick, in a single theory, a "Theory of Everything." Our guide to this brave new world is Brian Greene, the bestselling author and physicist. BRIAN GREENE (Columbia University) : And no matter how many times I come here, I never seem to get used to it. NARRATOR: Can he help us solve the greatest puzzle of modern physics—that our understanding of the universe is based on two sets of laws that don't agree? NARRATOR: Resolving that contradiction eluded even Einstein, who made it his final quest.
NOVA | The Elegant Universe | Watch the Program (full-screen) | PBS
Who We Are NASA's Chandra X-ray Observatory is a telescope specially designed to detect X-ray emission from very hot regions of the Universe such as exploded stars, clusters of galaxies, and matter around black holes. Because X-rays are absorbed by Earth's atmosphere, Chandra must orbit above it, up to an altitude of 139,000 km (86,500 mi) in space. The Smithsonian's Astrophysical Observatory in Cambridge, MA, hosts the Chandra X-ray Center which operates the satellite, processes the data, and distributes it to scientists around the world for analysis. The Center maintains an extensive public web site about the science results and an education program.
