
The SunSolar Dynamics ObservatoryLeft. This video shows the previous 48 hours of the Sun at the 171Å wavelength. It shows the quiet corona, upper transition region of the solar atmosphere. Fe IX ions are primarily responsible for emission at this wavelength.The video is updated every 30 minutes.
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The EarthThe International Space StationIf the left hand image is blank, refresh (clunky NASA interface). Click play at lower left hand corner to view the latest NASA transmission. If you are fortunate, it will show the Earth as seen live from the ISS, the current position of which is shown below. The ISS orbits the Earth in an hour and a half, at over 17 thousand miles an hour, at an altitude of about 200 miles.
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MarsSpirit Mars Rover A Martian dust devil spins across Gusev Crater just before noon on March 15, 2005. ![]() |
The Moon & Earth Apollo 11 Apollo 11 landed on the Moon on July 20, 1969. The video "For all Mankind" left, has low sound volume. Below, Earthrise over the Moon from Apollo 11.![]() |
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JupiterVoyager 1As Voyager approached Jupiter, pics were taken through a blue filter every 10 hours over 28 days in 1979; each frame shows Jupiter at the same local time with the Great Red Spot appearing stationary. Galileo would have been facinated by the brief glimpses of his moons. |
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The MoonLunar Reconnaissance Orbiter
Left, the far side of the Moon. The LRO is photographing the moon in detail from its 50 km polar orbit. 3D photography & laser altimetry provide a wealth of topographic info. The video below is well worth clicking to full screen.Altitude false colour: white 10,760 meters, to purple -9150 meters.
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Apollo 11 Lunar Module descent stage, Tranquillity Base. Armstrong's tracks to Little West crater (33 m diameter) are visible. |
Oblique view of the central peak. Summit 2 km (6562 ft) above the crater floor. Crater floor 4.7 km (15,420 ft) below the rim. ![]() |
Summit area of central peak, with a boulder 120 meters wide. ![]() |

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Home Page A plethora of unusual science & engineering |
Chronicles Victorian anarchic experimental science |
Book of Amusement Hundreds of entertaining experiments from 1854 |
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