NGC 2954 (also UGC 5155, MCG 3-25-19, and PGC 27600) is a magnitude +12.3 elliptical galaxy located 175 million light-years away in the constellation Leo. The galaxy was discovered by British astronomer John Herschel using a 45.72 cm (18 inch) f/13 speculum reflector at Feldhausen, Claremont, Ca...
NGC 3684 (also UGC 6453, MCG 3-29-50, IRAS 11245 + 1718, and PGC 35224) is a magnitude +11.5 spiral galaxy located 53 million light-years away in the constellation Leo. In the sky it can be found roughly 13' southwest of the galaxy NGC 3686. The galaxy was discovered by German-British astronomer Will...
Title: Integral Field Spectroscopy of the Low-Mass Companion HD984B with the Gemini Planet Imager Author: Mara Johnson-Groh, Christian Marois, Robert J. De Rosa, Eric L. Nielsen, Julien Rameau, Sarah Blunt, Jeffrey Vargas, S. Mark Ammons, Vanessa P. Bailey, Travis S. Barman, Joanna Bulger, Je...
Title: K2 Observations of 95 Vir: delta Scuti Pulsations in a Chromospherically Active Star Author: Ernst Paunzen, Stefan Huemmerich, Klaus Bernhard, Przemek Walczak We have searched for photometric variability in 95 Vir, a fast rotating, chromospherically active early F-type star, which wa...
The Small Magellanic Cloud (SMC, upper right), and the Large Magellanic Cloud (LMC).
The SMC is about 210,000 light-years and the LMC about 180,000 light-years away.
At lower left, is the brigh...
Title: The Transit Light Curve of an Exozodiacal Dust Cloud Authors: Christopher C. Stark Planets embedded within debris disks gravitationally perturb nearby dust and can create clumpy, azimuthally asymmetric circumstellar ring structures that rotate in lock with the planet. The Earth creat...
Malta's Azure Window collapses into the sea Malta's famous Azure Window rock arch has collapsed into the sea after heavy storms. Prime Minister Joseph Muscat said the news was "heartbreaking". A study in 2013 said that while erosion was inevitable, the structure was not in imminent danger of colla...
Rabbit hole leads to 700-year-old Knights Templar cave An apparently ordinary rabbit's hole in a farmer's field leads to an underground sanctuary once said to be used by the Knights Templar - a medieval religious order that fought in the Crusades. The Caynton Caves, near Shifnal in Shropshire, app...
Ronald William Prest Drever (26 October 1931 - 7 March 2017) was a Scottish experimental physicist. He was a Professor Emeritus at the California Institute of Technology, co-founded the LIGO project. Read more
Even though a dwarf galaxy clear across the Milky Way looks to be a mouse, it may have once been a bear that slashed through the Milky Way and created the galaxy's spiral arms, writes an Iowa State University astronomer in the journal Nature. Curtis Struck, an Iowa State professor of physics and astron...
Title: The Most Massive Heartbeat: An In-depth Analysis of iota Orionis Author: Herbert Pablo, N. D. Richardson, J. Fuller, J. Rowe, A.F.J. Moffat, R. Kuschnig, A. Popowicz, G. Handler, C. Neiner, A. Pigulski, G. A. Wade, W. Weiss, B. Buysschaert, T. Ramiaramanantsoa, A. D. Bratcher, C. J. Gerhar...
Title: Bringing VY Canis Majoris Down to Size: An Improved Determination of Its Effective Tempeature
Authors: Philip Massey, Emily M. Levesque, Bertrand Plez
The star VY CMa is a late-type M supergiant with many peculiarities, mostly related to the intense circ...
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