The ISS is major accomplishment for NASA (US), ESA (Europe), JAXA (Japan) CSA (Canada) and all the countries involved (16 in all). The space station is just over 72 m long by 108 m wide and 20 m high
Stereoscopic visualization is seldom used in Astrophysical publications and presentations compared to other scientific fields, e.g., Biochemistry, where it has been recognized as a valuable tool for decades.
On November 28, 1967, Jocelyn Bell Burnell and Anthony Hewish discovered the first Pulsar, a fast rotating neutron star that emits a beam of electromagnetic radiation. The radiation of a pulsar can only be observed when the beam of emission is pointing toward the Earth, much the way a lighthouse can only be seen when the light is pointed in the direction of an observer, and is responsible for the pulsed appearance of emission.
On January 7, 1610, physicist and astronomer Galileo Galilei turned his new telescope to the nocturnal sky to watch the planet Jupiter and discovered the eponymous four moons of Jupiter, Io, Europa, Ganimede, and Callisto.
On January 9, 1848, Caroline Lucretia Herschel, German-British astronomer and sister of astronomer Sir William Herschel, passed away at age 98. She is best know for the discovery of several comets, in particular the periodic comet 35P/Herschel-Rigollet, which bears her name.
On June 6, 1436, German mathematician, astronomer, astrologer, translator, instrument maker and Catholic bishop Johannes Müller aus Königsberg was born, better known under the Latinized version of his name as Regiomontanus. His diligent and accurate observations, measurements and recordings paved the way for modern astronomers such as Tycho Brahe and Nikolaus Copernicus.
On November 20, 1889, American astronomer Edwin Hubble was born. He is best known for his role in establishing the field of extragalactic astronomy and is generally regarded as one of the most important observational cosmologists of the 20th century.
If you've never abandoned your 4th grade obsession with the night sky (and who has?), Star Viewer is a web-based tool for peeking at some of the most interesting and vivid sights in the night sky. Star Viewer is not as complicated as, say, the previously mentioned open-source and feature-rich astronomy tool Stellarium
One beautiful Fall day seventeen years ago I wandered into an office and my life profoundly changed. I was an undergraduate at Princeton, and was looking for a thesis advisor. Jadwin Hall was an intimidating place. Plenty of names familiar from my textboo
lists potential future Earth impact events that the JPL Sentry System has detected based on currently available observations. Click on the object designation to go to a page with full details on that object.
R. Amorín, J. Vílchez, and E. Pérez-Montero. (2011)cite arxiv:1105.1477Comment: To appear in JENAM
Symposium "Dwarf Galaxies: Keys to Galaxy Formation
and Evolution", P. Papaderos, G. Hensler, S. Recchi
(eds.). Lisbon, September 2010, Springer Verlag, in
press.
F. Christensen, and B. Ramsey. (2022)cite arxiv:2207.00512Comment: 45 pages, 21 figures. Invited chapter for the 'Handbook of X-ray and Gamma-ray Astrophysics (Eds C.Bambini and A Santangelo, Springer Singapore, expected publication in 2022).
W. Cui. (2009)cite arxiv:0907.4052
Comment: Invited review, published in Research in Astronomy and Astrophysics
(see http://www.raa-journal.org/raa/index.php/raa/article/view/251).