Acme Posted July 27, 2015 Share Posted July 27, 2015 Holmberg radius - A measure of the semi-major axis of a galaxy. Link to comment Share on other sites More sharing options...
ACG52 Posted July 27, 2015 Share Posted July 27, 2015 (edited) Stellar Wind- The ejection of gas from the surface of a star. Many different types of stars, including our Sun, have stellar winds. The stellar wind of our Sun is also known as the Solar wind. A star's stellar wind is strongest near the end of its life when it has consumed most of its fuel. Edited July 27, 2015 by ACG52 Link to comment Share on other sites More sharing options...
Janus Posted July 27, 2015 Share Posted July 27, 2015 Declination - the angular distance from the celestial equator. Link to comment Share on other sites More sharing options...
Acme Posted July 28, 2015 Share Posted July 28, 2015 Nakhlite - A rare class of meteorite originating on Mars & composed mainly of pyroxenes. Link to comment Share on other sites More sharing options...
Janus Posted July 28, 2015 Share Posted July 28, 2015 Einstein cross - a type of gravitational lensing resulting in 4 images of a background object. Link to comment Share on other sites More sharing options...
MigL Posted July 28, 2015 Share Posted July 28, 2015 Standard candle A distance marker or measure. Typically Cepheid Variable stars or type 1A Supernovae. Link to comment Share on other sites More sharing options...
ACG52 Posted July 28, 2015 Share Posted July 28, 2015 Extinction- The apparent dimming of star or planet when low on the horizon due to absorption by the Earth's atmosphere. Link to comment Share on other sites More sharing options...
Acme Posted July 29, 2015 Share Posted July 29, 2015 Nereid - A moon of Neptune that has the highest eccentricity of orbit of any satellite in the solar system. Named for sea nymphs of Greek mythology. Link to comment Share on other sites More sharing options...
ACG52 Posted July 29, 2015 Share Posted July 29, 2015 Decretion disk-a circumstellar disk formed from gas ejected from the central star that now follows a near Keplerian orbit around it. This type of disk can be found around many Be stars. Link to comment Share on other sites More sharing options...
Janus Posted July 29, 2015 Share Posted July 29, 2015 Klemperer Rosette - a system of multiple bodies orbiting in regular patterns around a common barycenter. Link to comment Share on other sites More sharing options...
ACG52 Posted July 29, 2015 Share Posted July 29, 2015 Equant-The center of a planetary epicycle. Link to comment Share on other sites More sharing options...
Endy0816 Posted July 29, 2015 Share Posted July 29, 2015 Theia - hypothetical planet in the early solar system which according to the giant impact hypothesis collided with the Earth around 4.533 billion years ago. Link to comment Share on other sites More sharing options...
ACG52 Posted July 29, 2015 Share Posted July 29, 2015 Apoapsis- the point in orbit farthest from the planet. Link to comment Share on other sites More sharing options...
Janus Posted July 29, 2015 Share Posted July 29, 2015 Sagan, Carl Edward - American astronomer and popularizer of science. Link to comment Share on other sites More sharing options...
Acme Posted July 30, 2015 Share Posted July 30, 2015 Dione - A moon of Saturn discovered in 1684 by Giovanni Domenico Cassini. [it wasn't named until 1847.] Dione is in a 1:2 orbital resonance with Saturn's moon Enceladus and Dione itself has two Trojan moons, Helene and Polydeuces. Link to comment Share on other sites More sharing options...
ACG52 Posted July 30, 2015 Share Posted July 30, 2015 Electra- one of the Pleiades Link to comment Share on other sites More sharing options...
Janus Posted July 30, 2015 Share Posted July 30, 2015 Alkaid - the proper name for the last star in the handle of the Big Dipper. Link to comment Share on other sites More sharing options...
ACG52 Posted July 30, 2015 Share Posted July 30, 2015 Dschubba- arabic name for δ Sco in the constellation Scorpio Link to comment Share on other sites More sharing options...
Acme Posted August 1, 2015 Share Posted August 1, 2015 Aerolite - A meteorite made up of mostly stony material. Link to comment Share on other sites More sharing options...
ACG52 Posted August 1, 2015 Share Posted August 1, 2015 Eclipsing Binary- A binary system where one object passes in front of the other, cutting off some or all of its light. Link to comment Share on other sites More sharing options...
Janus Posted August 1, 2015 Share Posted August 1, 2015 Yoke mounting - a particular means of mounting a telescope. Link to comment Share on other sites More sharing options...
Mad For Science Posted August 2, 2015 Author Share Posted August 2, 2015 G-type star - A main sequence yellow dwarf star, the spectral type of which the sun is a member. Someone end in a H, I have a good one. Link to comment Share on other sites More sharing options...
Janus Posted August 2, 2015 Share Posted August 2, 2015 Radioheliograph - A radio telescope used for studying the Sun. Link to comment Share on other sites More sharing options...
Mad For Science Posted August 2, 2015 Author Share Posted August 2, 2015 (edited) Helium flash - The moment when a star begins to fuse helium. For a few brief moments the star increases its energy output 100 billion fold and produces more energy than an entire galaxy. Thanks Janus. Edited August 2, 2015 by Mad For Science Link to comment Share on other sites More sharing options...
Janus Posted August 2, 2015 Share Posted August 2, 2015 Harvest Moon - The full moon nearest to the autumnal equinox. Link to comment Share on other sites More sharing options...
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