Mordred Posted August 5, 2015 Share Posted August 5, 2015 Achilles A Trojan asteroid orbiting at the L4 point in Jupiters orbit (60◦ ahead of Jupiter). Link to comment Share on other sites More sharing options...
ACG52 Posted August 5, 2015 Share Posted August 5, 2015 Sylvia - an class x asteroid with a mean diameter of 286 km, a semimajor axis of 3.48 au,discovered br R.N.Pogson on May 16,1866. Link to comment Share on other sites More sharing options...
Mordred Posted August 5, 2015 Share Posted August 5, 2015 Adrastea Moon of Jupiter, also designated JXV. Link to comment Share on other sites More sharing options...
Janus Posted August 6, 2015 Share Posted August 6, 2015 Aristoteles - a crater on the Moon named after Aristotle Link to comment Share on other sites More sharing options...
Acme Posted August 6, 2015 Share Posted August 6, 2015 Selenocentric - Of or about the center of the Moon. Link to comment Share on other sites More sharing options...
ACG52 Posted August 6, 2015 Share Posted August 6, 2015 Canis Major -is a constellation in the southern celestial hemisphere. In the second century, it was included in Ptolemy's 48 constellations, and is counted among the 88 modern constellations. Link to comment Share on other sites More sharing options...
MigL Posted August 7, 2015 Share Posted August 7, 2015 Radiation era Initial phase of the universe when dynamics were governed by radiation. Spanned the time 10 sec to 10^12 sec after the Big bang and preceeded the matter era and dark-energy era ( current ). Link to comment Share on other sites More sharing options...
ACG52 Posted August 7, 2015 Share Posted August 7, 2015 Antares- a red supergiant star with a radius 883 times that of the sun Link to comment Share on other sites More sharing options...
Acme Posted August 7, 2015 Share Posted August 7, 2015 Shepherd moon - A small moon orbiting within a planetary ring system whose gravity maintains a distinct edge to rings. Cordelia and Ophelia are shepherd moons in Uranus' ring system. Link to comment Share on other sites More sharing options...
MigL Posted August 7, 2015 Share Posted August 7, 2015 No -Hair Theorem A theorem by J.A. Wheeler stating that upon gravitational collapse, the only properties conserved by a Black hole are mass, momentum and charge. Link to comment Share on other sites More sharing options...
ACG52 Posted August 7, 2015 Share Posted August 7, 2015 Miranda - smallest of Uranus' moons Link to comment Share on other sites More sharing options...
MigL Posted August 7, 2015 Share Posted August 7, 2015 Apollo US space program which resulted in the first manned Moon Landing. Deity of Greek mythology. Link to comment Share on other sites More sharing options...
Mordred Posted August 7, 2015 Share Posted August 7, 2015 Oberon Moon of Uranus, also designated UIV. Link to comment Share on other sites More sharing options...
ACG52 Posted August 7, 2015 Share Posted August 7, 2015 Nuclear Fusion- The nuclear process whereby several small nuclei are combined to make a larger one whose mass is slightly smaller than the sum of the small ones. Nuclear fusion is the reaction that fuels the Sun, where hydrogen nuclei are fused to form helium. Link to comment Share on other sites More sharing options...
Mordred Posted August 7, 2015 Share Posted August 7, 2015 Neupert effect-Statement that the temporal derivative of the observed soft X-ray emission during a solar flare reproduces the observed time development of the hard X-ray emission. Link to comment Share on other sites More sharing options...
MigL Posted August 7, 2015 Share Posted August 7, 2015 (edited) Non-Euclidian geometry A geometry where the interior angles of a triangle do not add up to 180 degrees. Popularised by Gauss, Boylai, and eventually, Riemann, and used by Einstein as a model for space-time geometry in GR. Edit- Sorry took too long. Disregard. Tidal force Differential gravitational force exerted on an object of size by a gravitating mass. Edited August 7, 2015 by MigL Link to comment Share on other sites More sharing options...
ACG52 Posted August 7, 2015 Share Posted August 7, 2015 (edited) Thisbe- A b class asteroid,232 km in diameter, 2.76 au from the sun, discovered by C.Peters on June 15,1866. I missed migl's post. Eunumia- A class S asteroid 268 km in diameter, 2.64 au from the sun, discovered in 1855 Edited August 7, 2015 by ACG52 Link to comment Share on other sites More sharing options...
Acme Posted August 7, 2015 Share Posted August 7, 2015 Earthlight - Light reflected onto the dark side of the Moon from Earth's atmosphere. Link to comment Share on other sites More sharing options...
Mordred Posted August 7, 2015 Share Posted August 7, 2015 Europa Moon ofJupiter, also designated JII. Discovered by Galileo in 1610, it is one of the four Galilean satellites. Lorentz boost Lorentz transformation of space-time coordinates from one system of reference to another moving at a constant velocity with respect to each other. ( my turn to be too late) Link to comment Share on other sites More sharing options...
Acme Posted August 7, 2015 Share Posted August 7, 2015 Ablation - Erosion of an object due to heating as it passes through an atmosphere. Link to comment Share on other sites More sharing options...
Mordred Posted August 7, 2015 Share Posted August 7, 2015 (edited) Naiad Moon of Neptune also designated NVIII. Discovered by Voyager 2 in 1989, Edited August 7, 2015 by Mordred Link to comment Share on other sites More sharing options...
ACG52 Posted August 7, 2015 Share Posted August 7, 2015 (edited) Namaka- smallest moon of the outer dwarf planet Haumea. Discovered in 2005 by the Keck observatory. Edited August 7, 2015 by ACG52 Link to comment Share on other sites More sharing options...
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