Jupiter in infrared light, as seen by NASA’s InfraRed Telescope Facility (IRTF). The observations were obtained in support of NASA’s Juno mission by a team headed by Juno scientist Glenn Orton.
On that day in 1957 was launched the satellite Sputnik 1, the Earth’s first artificial satellite.
The Soviet Union launched it into an elliptical low Earth orbit on 4 October 1957, orbiting for three weeks before its batteries died, then silently for two more months before falling back into the atmosphere. It was a 58 cm (23 in) diameter polished metal sphere, with four external radio antennas to broadcast radio pulses. Its radio signal was easily detectable even by radio amateurs and the 65° inclination and duration of its orbit made its flight path cover virtually the entire inhabited Earth. This surprise success precipitated the American Sputnik crisis and triggered the Space Race, a part of the Cold War. The launch ushered in new political, military, technological, and scientific developments.
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Same same but different. See cloud patterns near #Jupiter’s south pole in this series of color-enhanced images captured during my latest flyby of the planet.
Humanity’s first ever picture of a black hole.
Images of Jupiter taken by JunoCam on NASA’s Juno spacecraft.
Credit: NASA, JPL-Caltech, Mission Juno, Jason Major, Luca Fornaciari, Gerald Eichstädt
This artist’s concept shows an over-the-shoulder view of Cassini making one of its Grand Finale dives over Saturn | NASA/JPL-Caltech