Galaxy Zoo: Hubble. Spaceengine - space simulation software. The James Webb Space Telescope. Scientists Now Know: We're From Sagittarius Dwarf Galaxy! Scientists Now Know: We're Not From Here! Summary & comments by Dan Eden for Viewzone "This first full-sky map of Sagittarius shows its extensive interaction with the Milky Way," Majewski said. "Both stars and star clusters now in the outer parts of the Milky Way have been 'stolen' from Sagittarius as the gravitational forces of the Milky Way nibbled away at its dwarf companion.
This one vivid example shows that the Milky Way grows by eating its smaller neighbors. " The study's map of M giants depicts 2 billion years of Sagittarius stripping by the Milky Way, and suggests that Sagittarius has reached a critical phase in what had been a slow dance of death. "After slow, continuous gnawing by the Milky Way, Sagittarius has been whittled down to the point that it cannot hold itself together much longer," said 2MASS Science Team member and study co-author Martin Weinberg of the University of Massachusetts. Does this mean we are at a unique moment in the life of our galaxy?
From Dan Eden: Hi Dan, ESA/Hubble. The Fermi Gamma-ray Space Telescope. The Sounds of Pulsars. A pulsar is a highly magnetised neutron star, with a radius of 10-15 km, having somewhat greater mass than the Sun which has a radius of approximately 1 million km. Radiation is beamed out along the magnetic poles and pulses of radiation are received as the beam crosses the Earth, in the same manner as the beam from a lighthouse causes flashes. Being enormous cosmic flywheels with a tick attached, they make some of the best clocks known to mankind. These sounds directly correspond to the radio-waves emitted by the brightest pulsars in the sky as received by some of the largest radio telescopes in the world. To listen to the pulses of a radio pulsar, click on its arrow icon.
Scale of Universe - Interactive Scale of the Universe Tool. Quark (strange) Stars. The Hunting of the Quark What happens if a stellar remnant is too massive to be a neutron star, but not massive enough to become a black hole?
The result is a Strange Quark Star. Strange because the Quarks all get converted to a type called strange-quarks. Quark stars might actually be larger than their neutron star cousins. This size versus mass may be one of the things that will give away a Quark (strange) Star. Quark star may have enough gravitational energy to start ‘burning’ strange matter. The electroweak star core would be as big as an apple, but as massive as two Earths. Saving the best till last, the electroweak star’s core would therefore be as extreme as the universe was only 10-10 seconds (that’s 0.0000000001 seconds) after the Big Bang. Making Big Bang Soup I know you do not know that I like astronomy considerably and am not afraid to pull up theories of my very own. Well If these stars existed in the very early universe. Shortened link to this post: ☆ Quark (strange) Stars: