Robert Wilhelm Eberhard Bunsen (30 March 1811[N1] - 16 August 1899) was a German chemist. He investigated emission spectra of heated elements, and discovered caesium (in 1860) and rubidium (in 1861) with Gustav Kirchhoff. Read more Ed ~ He also invented the ubiquitous Bunsen burner.
The International Astronomical Union (IAU) has approved a new name for a crater on the Moon. Lev for a 0.06-km-wide lunar crater located at 12.7°N, 62.2°E. The feature was named after a traditional male Russian first name.
Title: A Class of Eccentric Binaries with Dynamic Tidal Distortions Discovered with Kepler Authors: Susan E. Thompson, Mark Everett, Fergal Mullally, Thomas Barclay, Steve B. Howell, Martin Still, Jason Rowe, Jessie L. Christiansen, Donald W. Kurtz, Kelly Hambleton, Joseph D. Twicken, Khade...
Celebration of the McClean restoration On Saturday the 24th March there was a special open night held at the South African Astronomical Observatory (SAAO) celebrating the recent renovation of the historic McClean telescope located in the observatory grounds. Dr Ian Glass was the guest speaker a...
Martian summer begins in the northern hemisphere on the 30th March, 2012. Mars has an axial tilt of 25.2°. This means that there are seasons on Mars, just as on Earth. The eccentricity of Mars' orbit is 0.1, much greater than the Earth's present orbital eccentricity of about 0.02. The large ecce...
Asteroid (760) Massinga is at Opposition on the 30th March, 2012. Magnitude:11.2 Distance to Earth: 1.460 AU Distance to Sun: 2.444 AU EphemerisDate UT R.A. (J2000) Decl. Delta r El. Ph. V
2012 03 29 000000 12 11 15.0 -15 11 42 1.460 2.443 167.2 5.2 11.2
2012 03 30 000000 12 10 20.0 -15 11 08 1.4...
STS-3 mission STS-3 was the third space shuttle mission, and was the third mission for the Space Shuttle Columbia. It was the first launch with an unpainted external tank, and the only landing at the White Sands Space Harbour near Las Cruces, New Mexico. [url=http://fr.arxiv.org/PS_cache/arxiv...
Salus (Latin: salus, "salvation") was a Roman goddess. She was the personification of well-being (health and prosperity) of both the individual and the state. She is sometimes equated with the Greek goddess Hygieia, though her functions differ considerably. There was a statue to Sal...
Mercury: at magnitude -0.8, starts the month in the constellation of Pisces. Mercury is at Perihelion (distance to sun: 0.3075 AU) at 5:50 UT, 2nd March. Mercury is at dichotomy (Half phase) at 15:30 UT, 4th March. Mercury is in conjunction on the 21st March, 2012. (On March 1st, RA=23h54m17s Dec=...
Sunspots 11448, 11445, 11438, 11444 and 11447 Expand (134kb, 560 x 560)Credit: SOHO/MDI Sunspots 11448, 11445, 11438, 11444 and 11447 captured with a 100mm refractor and Vesta p...
Title: Radial Velocity Studies of Close Binary Stars. XV Authors: T. Pribulla, S.M. Rucinski, R.M. Blake, W. Lu, J.R. Thomson, H. DeBond, T. Karmo, A. de Ridder, W. Ogloza, G. Stachowski, M. Siwak Radial-velocity measurements and sine-curve fits to the orbital radial velocity variations are pre...
Title: Accretion dynamics in the classical T Tauri star V2129 Oph Authors: S. H. P. Alencar, J. Bouvier, F. M. Walter, C. Dougados, J.-F. Donati, R. Kurosawa, M. Romanova, X. Bonfils, G. H. R. A. Lima, S. Massaro, M. Ibrahimov, E. Poretti We analyse the photometric and spectroscopic variability of t...
This close-up look at Saturn's moon Janus reveals spots on the moon's surface which may be dark material exposed by impacts.
If the dark markings within bright terrain are indeed impact features, then Janus' surface represents a contrast with that of Saturn's moon Phoebe, whe...
Hamburger Sternwarte (Hamburg Observatory) is an astronomical observatory located in the Bergedorf borough of the city of Hamburg in northern Germany. It is owned and operated by the University of Hamburg, Germany since 1968, although it was founded in 1825 by the City of Hamburg and moved to its p...
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