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Space. M104b_peris2048.jpg (2048×1410) The Carl Sagan Portal. The Planetary Society. 0.10-bortle.jpg from NASA Astrobiology. NASA Spitzer Space Telescope. Interactive 3D model of Solar System Planets and Night Sky. Description 3D simulation of the Solar System and night sky in real time - the Sun, planets, dwarf planets, comets, stars and constellations. - Heliocentric view with real-time positions of planets and planetary orbits - Schematic and realistic sizes of the planets and distances between them - Movement of the planets in time to see how they move in relation to each other - Virtual Orrery - Planetary exploration with info texts and additional views such as structure - Dwarf planets (Pluto, Ceres, Haumea, Makemake.

Interactive 3D model of Solar System Planets and Night Sky

Eris) and their orbits - Comets (Siding Spring, Lovejoy 2013, Lovejoy 2011, Panstarrs, ISON, Halley) - positions and trajectories - Stars and constellation of the night sky as viewed from a given location - Changes in the night sky during night, month and year - Searching of the stars and constellation, ecliptic line, grid lines and more. The Scale of the Universe. Light travels at 300,000 kilometres per second (186,000 miles per second).

The Scale of the Universe

In one second, a beam of light can travel SEVEN TIMES around the Earth. This table shows a number of distances to various objects expressed in terms of how long a beam of light takes to travel that distance. Scale of Universe - Interactive Scale of the Universe Tool. Large-scale structure of the Universe‬‏ HubbleSite - Out of the ordinary...out of this world. Alien Earths Online - Astronomy Picture of the Day.

Discover the cosmos!

Astronomy Picture of the Day

Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2014 April 14 An Unusual Globule in IC 1396 Credit & Copyright: T. Rector (U. Alaska Anchorage) & H. Watch the Program (full-screen) The Elegant Universe: Part 3 PBS Airdate: November 4, 2003 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.

Watch the Program (full-screen)

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.

Astronomy Magazine - Interactive Star Charts, Planets, Meteors, Comets, Telescopes. Gateway to the Universe of X-ray Astronomy! The Universe in Colour.