(225088) 2007 OR10 is a Trans-Neptunian object with an absolute magnitude of 1.9. This qualifies it as one of the largest dwarf planet candidates: Brown estimates that it is between Sedna and Quaoar in size. Mike Brown's discovery team has nicknamed the object "Snow White", as it wou...
The variable symbiotic Star AG Draco may be about to have an outburst and brighten to over 9th magnitude (from 11.3).
The last time it brightened was in 1991, when AG Draco reached visual magnitude of 8.1.
AG Draco is a symbiotic binary that probably contains a cool giant and a white dwarf.
F...
Friederich Wilhelm Gustav Spörer (23 October 1822 - 7 July 1895) was a German astronomer. He is noted for his studies of sunspots and sunspot cycles. In this regard he is often mentioned together with Edward Maunder. Spörer was the first to note a prolonged period of low sunspot activity from 1645 to 1...
Title: WD 1202-024: The Shortest-Period Pre-Cataclysmic Variable Author: S. Rappaport, A. Vanderburg, L. Nelson, B.L. Gary, T.G. Kaye, B. Kalomeni, S.B. Howell, J.R. Thorstensen, F.-R. Lachapelle, M. Lundy, J. St-Antoine Among the 28,000 targeted stars in K2 Field 10 is the white dwarf WD 1202...
Title: Deep Chandra observations of the stripped galaxy group falling into Abell 2142 Author: D. Eckert, M. Gaspari, M. S. Owers, E. Roediger, S. Molendi, F. Gastaldello, S. Paltani, S. Ettori, T. Venturi, M. Rossetti, L. Rudnick In the local Universe, the growth of massive galaxy clusters mainly...
The parasitic dodder plant doesn't have a nose, but it knows how to sniff out its prey.
The dodder (Cuscuta) attacks such plants as tomatoes, carrots, onions, citrus trees, cranberries, alfalfa and even flowers, and is a problem for farm...
ESRO-2 control room On 17 May 1968, the ESRO-2B satellite was launched by a Scout-B rocket from Vandenberg Air Force Base in California, USA, and became the first mission controlled by teams at the European Space Operations Centre (ESOC), Darmstadt, Germany. Renamed the International Radiation...
Title: OGLE-2016-BLG-1469L: Microlensing Binary Composed of Brown Dwarfs Author: C. Han, A. Udalski, T. Sumi, A. Gould, M. D. Albrow, S.-J. Chung, Y. K. Jung, Y.-H. Ryu, I.-G. Shin, J. C. Yee, W. Zhu, S.-M. Cha, S.-L. Kim, D.-J. Kim, C.-U. Lee, Y. Lee, B.-G. Park, I. Soszynski, P. Mróz, P. Pietrukowi...
The discovery of a pattern of X-ray "stripes" in the remains of an exploded star may provide the first direct evidence that a cosmic event can accelerate particles to energies a hundred times higher than achieved by the most powerful particle accelerator on Earth. This result comes from...
NGC 6832 is a magnitude +13.3 group of stars around SAO 32016 located in the constellation Draco. The asterism was discovered by British astronomer John Herschel on the 11th August 1831. Right Ascension 19h 48m 15.5s, Declination +59° 25 22"
NGC 6856 is an open cluster or possibly an asterism, located 5558 ±258 light-years away in the constellation Cygnus. NGC 6856 was discovered by British astronomer John Herschel using a 47.5 cm (18.7 inch) f/13 speculum reflector at Windsor Road, Slough, on the 24th September 1829. Right Ascensio...
NGC 6446 (also MCG 6-39-18, ARAK 528 and PGC 60825) is a magnitude +15.2 spiral galaxy located 311 million light-years away in the constellation Hercules. The galaxy is gravitationally interacting with the neighbouring galaxy NGC 6447. The galaxy is listed in the catalogue of 'Galaxies of high...
NGC 6447 (also MCG 6-39-19, IRAS 17445+3535, UGC 10975 and PGC 60829) is a magnitude +12.9 face-on barred spiral galaxy located 310 million light-years away in the constellation Hercules. The galaxy is gravitationally interacting with the neighbouring galaxy NGC 6446. The galaxy was discove...
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