What will happen if the whole universe exploded?

If the Universe holds enough matter, including dark matter, the combined gravitational attraction of everything will gradually halt this expansion and precipitate the ultimate collapse. Over time, galaxies, then individual stars, will smash into each other more frequently, killing off any life on nearby planets.

What if all the stars went out?

Its brightness is magnitude 5.8 or just above the 6th magnitude limit.” As per this information, if all the stars went out simultaneously, then it would take 16308 years for the sky to become completely dark to the naked eye. Of course, stars which are farther away will still be visible to powerful telescopes.

Can a star destroy a galaxy?

Supernovas are created during the last moments of a star’s life. These gigantic explosions can wipe out galaxies and the planets inside them. About every 50 years a star explodes in our home galaxy, the Milky Way. These powerful eruptions are called supernovae.

How often do stars explode in the Milky Way?

about once every 50 years
Although supernovae are relatively rare events, occurring on average about once every 50 years in the Milky Way, observations of distant galaxies allowed supernovae to be discovered and examined more frequently.

Can you see supernova from Earth?

The light from a supernova can be as bright as an entire galaxy for a short period of time. Some supernovae in our galaxy have been so bright they have been visible during the day! Unfortunately, supernovae visible to the naked eye are rare.

How many stars are in the Milky Way?

The Milky Way is huge – about 100,000 light-years across with billions upon billions of stars in it. It has four large, spiral arms encircling its center.

What happens when a star explodes?

– Lizey, aged 12, Australia. The sun is a star, and when a star explodes it’s called a supernova. These types of explosions are very bright and very powerful. They release lots of dust into space, which is used to make more stars and planets.

What would happen to the Earth if it entered the Galaxy?

The closer you get to the heart of the galaxy, the tighter stars are packed together. Because of this high star density, the Earth would be blasted with a lot more radiation than what the Sun throws at you right now. Under these circumstances, the odds of life ever evolving would be pretty small.

What type of galaxy is the Milky Way?

The Milky Way is huge – about 100,000 light-years across with billions upon billions of stars in it. It has four large, spiral arms encircling its center. That makes it a barred spiral galaxy, just like most galaxies in the observable universe.