Elliptical galaxies have an overall shape resembling smooth, oblong blobs. This shape is believed to occur when smaller galaxies merge, losing their defined structures in the process.Answer and Explanation: Because galaxy collision takes a very long time, elliptical galaxies are very old. This means...
Look into the night sky and you'll glimpse the stars from hundreds of billions of galaxies. Some galaxies are swirling blue disks like our own Milky Way, others are red spheres or misshapen, clumpy messes or something in between. Why the different configurations? It turns out that a galaxy'...
Why do some stars become super red giants? Why are large astronomical bodies such as planets and stars round? Why does Venus have no moons? Why do all gas planets have rings? Why are binary stars useful to astronomers? Why do galaxies spiral?
An astronomer studying the 3 main processes that cause galaxies to lose mass found that the dominant process depends on the size and age of the galaxy.
{m 408MHz}$), the absolute magnitude of host galaxies ($M_{m host}$), the polarization fraction from NVSS survey ($P_{m NVSS}$), the observed arcsecond scale radio core flux at 5 GHz ($F_{m core}$) and jet Doppler factor; all the parameters are directly extbf{measured} or ...
But she also gave some love to Earth's nearest neighbor: "Many, many, many boots on the moon — that, to me, would be incredible to see." NASA Acting Administrator Janet Petro speaks to Dave Cavossa, president of the Commercial Space Federation, during the 27th Annual Commercial Spa...
Gravity is the reason things with mass or energy are attracted to each other. It is why apples fall toward the ground and planets orbit stars. Magnets attract some types of metals, but they can also push other magnets away. So how come you feel only the pull of gravity?
Having a catalog of local group galaxies would be nice. I don't know how large a memory you have or how fast it can access a particular galaxy in a 3+million object database. Those are always considerations, of course. peleuba and brickbots like this ...
This question has spawned countless proposed resolutions since Fermi's time, including the infamousHart-Tipler Conjecture(i.e., they don't exist). Other interpretations emphasize how space travel is hard and extremely time and energy-consuming, which is why species are likely to settle in cl...
Why are spiral galaxies so bright? Why is the constellation Orion only visible in the winter? Why is Hale-Bopp so bright? Why do some stars twinkle? Why does Rigel shine as brightly as Betelgeuse? What gives the moon light? Why is the Tycho crater so bright?