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Mars geology
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(Preview)
New findings show the planet is more complex and active than previously believed - at least in certain places.
Finding those places, however, turns out to be trickier than just looking at landforms like river valleys or lakebeds or searching for specific minerals.
"Context is everythin...
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Blobrana
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Asteroid (249) Ilse
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The magnitude 15.9 asteroid (249) Ilse will occults the magnitude 2.9 star delta Cap (HD 207098) in the constellation Capricornus, at 03:16 UT The 0.7 second daylight event occurs over SE Australia Position (2000): RA 21 47 02.4451, Dec -16 07 38.229
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Blobrana
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Asteroid 24 Themis
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(24) Themis Epoch 2007 Oct. 27.0 TT = JDT 2454400.5 Goffin M 328.35947 (2000.0) P Q n 0.17791088 Peri. 107.89566 -0.80788481 -0.58928891 a 3.1308893 Node 35.99891 +0.53556758 -0.73962459 e 0.1319198 Incl. 0.75953 +0.24594612 -0.32510621 P 5.54 H 7.08 G 0.19 U Ephemeris Date TT R. A. (2000) Decl....
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Blobrana
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12
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Arsia Mons
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Arsia Mons is the southernmost of the Tharsis volcanoes.
It is 434 km in diameter, almost 19 km high, and the summit caldera is 115 miles wide. For comparison, the largest volcano on Earth is Mauna Loa. From its base on the sea floor, Mauna Loa measures only 10 km high and 120 km in dia...
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Blobrana
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4
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Interplanetary dust
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Title: Evidence for dust accumulation just outside the orbit of Venus Authors: Ch. Leinert, B. Moster To contribute to the knowledge of dynamics of interplanetary dust we are searching for structures in the spatial distribution of interplanetary dust near the orbit of Venus. To this end we study t...
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Blobrana
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13
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Asteroid (175706) 1996 FG3
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The 610 - 1400 metre wide asteroid (175706) 1996 FG3 will make a close pass (60.7 Lunar Distances, 0.1561 AU), travelling at 6.58 km/s, to the Earth-Moon system on the 6th May, 2009. See more The Lunar Distance (LD), the distanc...
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Blobrana
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3
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Comet 2P Encke
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Comet 2P Encke was first discovered on the 17th January, 1786, by Pierre Méchain (Paris, France). The comet has one of the shortest periods (3.3 years) of any known comet. The comet will make a close pass (0.48 AU) of the Earth on the 17th October 2013. The Taurid meteor showers are associated with the c...
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Blobrana
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9
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Solar System formation
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Two British astronomers, Paul Cresswell and Richard Nelson, will present new computer simulations of how planetary systems form.
They find that, in the early stages of planetary formation, giant protoplanets migrate inward, locked into mutual orbital resonances, towards the central star....
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Blobrana
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75
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Impact rate
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Title: Jupiter - friend or foe? I: the asteroids Authors: J. Horner, B. W. Jones (The Open University, UK) The asteroids are the major source of potential impactors on the Earth today. It has long been assumed that the giant planet Jupiter acts as a shield, significantly lowering the impact rate on th...
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Blobrana
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Planet migration
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Title: Speed limit on Neptune migration imposed by Saturn tilting Authors: Gwenaël Boué, Jacques Laskar, Petr Kuchynka In this Letter, we give new constraints on planet migration. They were obtained under the assumption that Saturn's current obliquity is due to a capture in resonance with Neptu...
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Blobrana
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5
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Basaltic Asteroids
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Title: The Distribution of Basaltic Asteroids in the Main Belt Authors: Nicholas A. Moskovitz (1), Robert Jedicke (1), Eric Gaidos (2 and 3), Mark Willman (1), David Nesvorny (4), Ronald Fevig (5), Zeljko Ivezic (6) ((1) Institute for Astronomy, Univ. of Hawaii, (2) Dept. of Geology & Geophys...
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Blobrana
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Comet 81P/Wild
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The 10th magnitude comet 81/P Wild is 1 degree from the planet Saturn in the constellation Virgo. Expand (11kb, 913 x 634) Date TT R. A. (2000) Decl. Delta r Elong. Phase mag mag 2009 12 30 12 06.04 +00...
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Blobrana
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Asteroid (60) Echo
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Asteroid (60) Echo is at opposition on the 22nd February, 2010. (V = 10.2) Ephemeris Date TT R. A. (2000) Decl. Delta r Elong. Phase V 2010 02 05 10 35.27 +03 56.9 1.106 2.048 156.5 11.0 10.6 2010 02 10 10 31.50 +04 24.8 1.093 2.056 162.5 8.3 10.5 2010 02 15 10 27.30 +04 57.0 1.086 2.064 168.5 5.5 10.3 2010 02 20...
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Blobrana
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Mars
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A small northern New Mexico village now shares its name with a 5-mile-wide asteroid crater on Mars.
The International Astronomical Union recently named the Martian crater for the village of Chupadero, which sits at the foothills of the Sangre de Cristo Mountains.
The name was provided by Brad...
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Blobrana
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130
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Comet
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1 2 3 4 5 … 6
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I heard that a new comet was discovered today. Is this true, does anyone know?
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Anonymous
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