Question: What Is Holding Our Galaxy Together?

What principle objects make up a galaxy?

What principle objects make up a galaxy.

Stars, nebulas, and planets..

What is the oldest thing in the universe?

Astronomers have confirmed the discovery of one the oldest and most distant objects ever known in the universe — a star-forming galaxy 12.8 billion light-years away that started forming within a billion years of the Big Bang that kickstarted everything.

What is the biggest thing in the universe?

The biggest supercluster known in the universe is the Hercules-Corona Borealis Great Wall. It was first reported in 2013 and has been studied several times. It’s so big that light takes about 10 billion years to move across the structure. For perspective, the universe is only 13.8 billion years old.

What is a lenticular s0 galaxy?

A lenticular galaxy (denoted S0) is a type of galaxy intermediate between an elliptical (denoted E) and a spiral galaxy in galaxy morphological classification schemes. … Lenticular galaxies are disc galaxies that have used up or lost most of their interstellar matter and therefore have very little ongoing star formation.

Can a black hole kill you?

But that all changed in the early 1990s when different research teams in Canada and the US discovered a second singularity called a “mass inflation singularity.” It still has a strong gravitational pull, but it would only stretch you by a finite amount, and potentially NOT kill you in the process, meaning, you might …

What happens if you get stuck in a black hole?

In the case of black holes, the pull is so strong that nothing – not even light – can escape. A black hole is so massive that time itself starts to warp. You wouldn’t feel anything different as you fell in, but to anyone watching, you would appear to slow.

What is the smallest thing in the universe?

An atom is the smallest unit of any element in the periodic table. … Experiments found that each atom has a tiny, dense nucleus, surrounded by a cloud of even tinier electrons. The electron is, as far as we know, one of the fundamental, indivisible building blocks of the universe.

What is the heaviest matter in the universe?

In nature, the heaviest element is Uranium, with a proton count of 92 and an average atomic weight of 238 (weight varies between isotopes). Depending on the isotope, Uranium has a half-life ranging from 25,000 to 4.5 billion years.

What holds the galaxy together quizlet?

What holds galaxy groups together? In our solar system gravity holds everything together.

Where are we in the Milky Way galaxy?

We’re about 26,000 light-years from the center of the galaxy, on the inner edge of the Orion-Cygnus Arm. It’s sandwiched by two primary spiral arms, the Sagittarius and Perseus Arms. The artists’ concepts above and below show the Orion-Cygnus Arm, the home spiral arm of our sun in the Milky Way galaxy.

Can anything survive a black hole?

Black holes are bizarre objects that get their name from the fact that nothing can escape their gravity, not even light. If you venture too close and cross the so-called event horizon, you’ll never escape. For small black holes, you’d never survive such a close approach anyway.

Where do things go in a black hole?

It is thought that the matter that goes into a black hole gets crushed into a tiny point at the center called a “singularity”. That’s the only place that matter is, so if you were to fall into a black hole you wouldn’t hit a surface as you would with a normal star. Once it’s there, it’s there.

Do black holes hold galaxies together?

According to computer models and theory, it is not necessary for a galaxy to have a black hole at its center. The mass of the stars and gas clouds in the galaxy attracts and this gravitational attraction holds many galaxies together.

What force holds stars and planets together in a galaxy?

gravityFirst, gravity is the force that pulls us to the surface of the Earth, keeps the planets in orbit around the Sun and causes the formation of planets, stars and galaxies.