* Astronomy

The 1999 Athens earthquake, registering a moment magnitude of 6.0, occurred on September 7, 1999, at 2:56:50 pm local time and lasted approximately 15 seconds in Ano Liosia. The tremor was epicentered approximately 17 km to the northwest of the city center, in a sparsely populated area between the...

The Dong Ujimqin Qi (Mesosiderite) meteorite fell in Nei Mongol, China, on the 7th September, 1995. A total mass of 128.8 kg was recovered. 45° 30'N, 119° 2'E

The Unkoku (OC) meteorite fell in Cholla-namdo, South Korea, on the 7th September, 1924. A total mass of 1000 g was recovered. 34° 48'N, 127° 0'E

The Sauguis (L6) meteorite fell in Aquitaine, France, on the 7th September, 1868. A total mass of 4 kg was recovered. 43° 9'N, 0° 51'W

The Luponnas (H3-5) meteorite fell in Rhone-Alpes, France, on the 7th September, 1753. A total mass of 14 kg was recovered. 46° 13'N, 5° 0'E

Title: KIC 7524178 -- an SU UMa-Type Dwarf Nova Showing Predominantly Negative Superhumps throughout Supercycle Authors: Taichi Kato (Kyoto U.), Yoji Osaki (U. of Tokyo) We analysed the Kepler long cadence data of KIC 7524178 (=KIS J192254.92+430905.4), and found that it is an SU UMa-type dwarf...

The 27 - 60 metre wide asteroid 2013 RO21 will make a close pass (25.8 lunar distances, 0.0662 AU), travelling at 7.10 km/second, to the Earth-Moon system on the 6th September, 2013 @ 14:56 UT ±01:42. See more The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0....

The 22 - 48 metre wide asteroid 2013 RC6 will make a close pass (18.5 lunar distances, 0.0476 AU), travelling at 11.79 km/second, to the Earth-Moon system on the 7th September, 2013 @ 16:29 UT ±00:02. See more The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0....

The 75 - 170 metre wide asteroid 2013 RF will make a close pass (16.1 lunar distances, 0.0413 AU), travelling at 19.15 km/second, to the Earth-Moon system on the 7th September, 2013 @ 19:10 UT ±00:01. See more The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0....

A total solar eclipse occurred on September 7, 1858. It was visible across South America. Read more

Title: CFBDS J111807-064016: A new L/T transition brown dwarf in a binary system Authors: C. Reylé, P. Delorme, É. Artigau, X. Delfosse, L. Albert, T. Forveille, A. S. Rajpurohit, F. Allard, D. Homeier, A.C. Robin Stellar-substellar binary systems are quite rare, and provide interesting benchm...

The Weyl curvature hypothesis, which arises in the application of Albert Einstein's general theory of relativity to physical cosmology, was introduced by the British mathematician and theoretical physicist Sir Roger Penrose in an article in 1979[1] in an attempt to provide explanations for tw...

Title: Kepler-77b: a very low albedo, Saturn-mass transiting planet around a metal-rich solar-like star Authors: D. Gandolfi, H. Parviainen, M. Fridlund, A. P. Hatzes, H. J. Deeg, A. Frasca, A. F. Lanza, P. G. Prada Moroni, E. Tognelli, A. McQuillan, S. Aigrain, R. Alonso, V. Antoci, J. Cabrera,...

Title: A large meteor seen on September 6, 1934 Authors: Nininger, H. H. Read more

Hubble Catches a Spiral in the Air Pump Lying more than 110 million light-years away from Earth in the constellation of Antlia (The Air Pump) is the spiral galaxy IC 2560, shown here in an image from NASA/ESA Hubble Space Telescope. At this distance it is a relatively nearby spiral galaxy, and is part o...