Galaxies also contain comets, asteroids, nebulas, planets etc Most galaxies are moving away from us, but the famous Andromeda galaxy is moving towards us. No need to panic. It will not happen for billions of years; by then, the entire human race will be dead or on another planet. It ...
that resemble a pattern. Constellations are areas of the sky where we have broken the sky into parts. All the stars in the constellations are withinthe Milky Way. A galaxy is a large collection of stars containing billions or trillions of stars. Galaxies exist outside our own Milky Way ...
As soon as astronomers realized that there are objects that are separate from our own Milky Way, they observed some galaxies that appeared to be much messier than normal. But it wasn't immediately obvious that galaxies actually do anything as interesting as merge. Get the Space.com Newsletter ...
Most nebulae are enormous in size. Some are even hundreds of light-years in diameter. Nebulae do contain some mass. They have a greater density than the space surrounding them. Yet many nebulae are less dense than any vacuum we have created on Earth. “a nebula is a cloud of gas and d...
What evidence is there that galaxies contain dark matter? Super massive black holes? What is the basis for the statement that our solar system is not unique in the universe? What is antimatter? What is the smallest matter in the world?
Galaxies are generally larger than star clusters, too. "Galaxies are like the cities that star clusters live in," Geller said. "Galaxies can contain thousands or more star clusters, and many molecular clouds, and dark matter,et cetera." ...
The infrared camera on the Webb has been able to see some things that other telescopes simply can’t. In the constellation Cetus there are two galaxies that are in the middle of colliding. Known as IC 1623, it has been obscured by the enormous amounts of dust. ...
Since it came online, it has produced deep-field images containing thousands of distinguishable galaxies and narrow profiles of individual stars—and its repertoire is still expanding. In June 2024, JWST astronomers presented the results of the JADES (JWST Advanced Deep Extragalactic Survey) program,...
But do wehaveto accept black holes as the only explanation of what lies at the center of these galaxies? What else could we put in such a small space other than a giant black hole? The alternative is stars. But to explain the masses in the centers of galaxies without a black hole we...
They do because the larger gaseous planets occupy a larger space in the Solar System. They have larger gravitational forces in which to grab and contain a moon. Earth only has one Moon, born from a cosmic collision billions of years ago. Mar's moons are irregular, not spherical, making sc...