Can we visit other galaxies?

Can we visit other galaxies?

Answer: Yes, you can see a few other galaxies without using a telescope! The nearby Andromeda Galaxy, also called M31, is bright enough to be seen by the naked eye on dark, moonless nights. The Andromeda Galaxy is the only other (besides the Milky Way) spiral galaxy we can see with the naked eye.

What happens when you go into another galaxy?

When you’re wondering what happens when two galaxies collide, try not to think of objects smashing into each other or violent crashes. Instead, as galaxies collide, new stars are formed as gasses combine, both galaxies lose their shape, and the two galaxies create a new supergalaxy that is elliptical.

Can we ever travel faster than light?

So will it ever be possible for us to travel at light speed? Based on our current understanding of physics and the limits of the natural world, the answer, sadly, is no. So, light-speed travel and faster-than-light travel are physical impossibilities, especially for anything with mass, such as spacecraft and humans.

Is it possible to travel back in time?

Time travel to the past is theoretically possible in certain general relativity spacetime geometries that permit traveling faster than the speed of light, such as cosmic strings, traversable wormholes, and Alcubierre drives.

What is outside the universe?

To answer the question of what’s outside the universe, we first need to define exactly what we mean by “universe.” If you take it to mean literally all the things that could possibly exist in all of space and time, then there can’t be anything outside the universe.

Who found Tachyon?

Gerald Feinberg
Tachyons were first introduced into physics by Gerald Feinberg, in his seminal paper “On the possibility of faster-than-light particles” [Phys. Rev. 159, 1089—1105 (1967)]. E = m[1−(v/c)²]−½.

What is the galaxy we live in?

The Milky Way
We live in one of the arms of a large spiral galaxy called the Milky Way. The Sun and its planets (including Earth) lie in this quiet part of the galaxy, about half way out from the centre. 100 000 years to cross from one side to the other.

How many suns are in universe?

Solar System

Planetary system
Stars	1 (Sun)
Known planets	8 (Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune)
Known dwarf planets	2 universally accepted (Pluto Eris) 1 more likely to be (Ceres) 2 more possible to be (Haumea Makemake)
Known natural satellites	575 (185 planetary 390 minor planetary)

Does the past exist?

Events in the past and in the future do not exist. The only reality, the only thing that is real, is the present. This idea is called Presentism. This idea, however, runs into some serious problems when you start taking into account relativity.

Does the universe have an end?

The universe, being all there is, is infinitely big and has no edge, so there’s no outside to even talk about. Oh, sure, there’s an outside to our observable patch of the universe. The cosmos is only so old, and light only travels so fast. The current width of the observable universe is about 90 billion light-years.

Is it possible for humans to travel to another galaxy?

This phenomenon gives hope to the scientists that intergalactic travel is possible for humans. A common example that is quoted in this regard is that Andromeda Galaxy is 2 million light years away but it would take just 28 years for the astronaut. However, the requirements of fuel become unrealistic for such a journey.

Are there other galaxies other than the Milky Way?

For example, different satellites are orbiting around planets like Neptune but no man has ever gone that far in the space. Science did discover that there are hundreds and thousands of other galaxies in the universe other than the Milky Way. Since that moment, an idea has circulated the scientific world which is to travel to a neighboring galaxy.

How does an object travel to another galaxy?

Supernova explosion in the binary system and star ejection from the supermassive black hole are some common solutions. When an object moves at the speed of light, Time Dilation takes place. This shortens the time needed to travel to another galaxy with respect to the traveler.

Are there aliens in the Milky Way galaxy?

No, no has ever gone out of our Milky way galaxy (not sure about Aliens). The Milky Way is about 1,000,000,000,000,000,000 km ( about 100,000 light years or about 30 kpc) across. And we live on Earth in Solar System in Orion Spiral Arm, Milky Way Galaxy. But in the case of space the stats differs as there is no frictional force or air resistance.