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Twitter
In this pamphlet of 1681 are the topic. But there is also a dog depicted in the print peeing against the le…
comets  from twitter_favs
june 2019 by mattpoland
The Spaceguard Centre | The National Near Earth Objects Information Centre
The Spaceguard Centre The National Near Earth Objects Information Centre The most significant natural danger to life on Earth comes from asteroids and comets.…
government  aerospace  astronomy  observatory  atmospheric  planetary  science  survey  asteroids  comets  meteors 
december 2018 by asaltydog
ESA Science & Technology: Rosetta
ESA's historic Rosetta mission concluded as planned, on 30 September 2016, with a controlled impact onto the comet it had been investigating for more than two…
government  astronomy  physics  atmospheric  planetary  science  geology  survey  comets  aerospace  technology  engineering  research  europe  asteroids  meteors 
october 2018 by asaltydog
Rosetta / Space Science / Our Activities / ESA
Europe's comet chaser Why 'Rosetta'? History of cometary missions About comets … Why comets? How many comets are there? Where life began Debris of the Solar…
government  astronomy  physics  atmospheric  planetary  science  geology  survey  comets  aerospace  technology  engineering  research  europe  asteroids  meteors 
october 2018 by asaltydog
Minor Planet Epherides
online calculations of comet/minor planet visibility
astronomy  comets  asteroids 
october 2018 by horbrastar
IAU Minor Planet Center
The Minor Planet Center (MPC) operates at the Smithsonian Astrophysical Observatory (SAO), under the auspices of Division F (formerly Division III and, before that, Commission 20) of the International Astronomical Union (IAU). The Minor Planet Center derives its operating budget from a five-year NASA grant.

The MPC is responsible for the designation of minor bodies in the solar system: minor planets; comets; and natural satellites. The MPC is also responsible for the efficient collection, computation, checking and dissemination of astrometric observations and orbits for minor planets and comets, via its various journals:
astronomy  minorplanets  solarsystem  comets  NEO  IAU 
october 2018 by areich
APOD: 2017 October 2 - Two Comets and a Star Cluster
Explanation: Two unusual spots are on the move near the famous Pleiades star cluster. Shifting only a small amount per night, these spots are actually comets in our nearby Solar System that by chance wandered into the field of the light-years distant stars. On the far left is comet C/2017 O1 ASAS-SN, a multi-kilometer block of evaporating ice sporting a bright coma of surrounding gas dominated by green-glowing carbon. Comet ASAS-SN1 shows a slight tail to its lower right. Near the frame center is comet C/2015 ER61 PanSTARRS, also a giant block of evaporating ice, but sporting a rather long tail to its right. On the upper right is the Pleiades, an open cluster dominated by bright blue stars illuminating nearby reflecting dust. This exposure, taken about two weeks ago, is so deep that the filamentary interstellar dust can be traced across the entire field. The Pleiades is visible to the unaided eye, but it should require binoculars to see the comets.
astronomy  picture  nasa  pleiades  star-cluster  stars  comets 
october 2017 by lynx
Tunguska event - Wikipedia
The Tunguska event was a large explosion that occurred near the Stony Tunguska River in Yeniseysk Governorate (now Krasnoyarsk Krai), Russia, on the morning of 30 June 1908 (NS). The explosion over the sparsely populated Eastern Siberian Taiga flattened 2,000 km2 (770 sq mi) of forest yet caused no known human casualties. The explosion is generally attributed to the air burst of a meteoroid. It is classified as an impact event, even though no impact crater has been found; the object is thought to have disintegrated at an altitude of 5 to 10 kilometres (3 to 6 miles) rather than hit the surface of the Earth.
TunguskaEvent  Russia  Asteroids  Comets  Meteoroids  Siberia  Explosions  1908  History 
august 2017 by dk33per

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