- What is there beyond our galaxy?
- What is beyond the universe?
- Is there anything beyond the Milky Way?
- How long will universe last?
- Does space have an end?
- Are there other universes?
- What is beyond the farthest galaxy?
- What planets can humans live on?
- How many galaxies are they?
- How long would it take to travel 13 billion light years?
- Can a star exist outside a galaxy?
- What is the closest star to Earth?
- Will humans go extinct?
- What is the farthest thing in space?
- Can we breathe on Mars?
- Can a human live on Neptune?
- What is the oldest thing in the universe?
- What are the 12 planets?
What is there beyond our galaxy?
Beyond our galaxy itself, which holds our solar system and everything beyond it, are other galaxies.
The nearest galaxy is Andromeda, which will collide with the Milky Way galaxy in about 4 billion years.
The Milky Way is part of the Local Group, which consists of 30 galaxies..
What is beyond the universe?
So, in some ways, infinity makes sense. But “infinity” means that, beyond the observable universe, you won’t just find more planets and stars and other forms of material…you will eventually find every possible thing.
Is there anything beyond the Milky Way?
Astronomers have discovered a vast assemblage of galaxies hidden behind our own, in the “zone of avoidance.” Astronomers have discovered that there is a vast wall across the southern border of the local cosmos.
How long will universe last?
Assuming that dark energy continues to make the universe expand at an accelerating rate, in about 150 billion years all galaxies outside the Local Supercluster will pass behind the cosmological horizon.
Does space have an end?
The end result is unknown; a simple estimation would have all the matter and space-time in the universe collapse into a dimensionless singularity back into how the universe started with the Big Bang, but at these scales unknown quantum effects need to be considered (see Quantum gravity).
Are there other universes?
In fact there are almost too many other potential universes. Physicists have proposed several candidate forms of “multiverse”, each made possible by a different aspect of the laws of physics. The trouble is, virtually by definition we probably cannot ever visit these other universes to confirm that they exist.
What is beyond the farthest galaxy?
The new record holder is the galaxy MACS0647-JD, which is about 13.3 billion light-years away. The universe itself is only 13.7 billion years old, so this galaxy’s light has been traveling toward us for almost the whole history of space and time.
What planets can humans live on?
A 2015 review concluded that the exoplanets Kepler-62f, Kepler-186f and Kepler-442b were likely the best candidates for being potentially habitable. These are at a distance of 1,200, 490 and 1,120 light-years away, respectively.
How many galaxies are they?
The deeper we look into the cosmos, the more galaxies we see. One 2016 study estimated that the observable universe contains two trillion—or two million million—galaxies.
How long would it take to travel 13 billion light years?
Now imagine walking 500 trillion years that’s a million times walking 500 million years that’s how long it would take you to walk one million light years 13 billion is 13 thousand times that meaning you would have to walk 500 trillion years 13 thousand times to go one light year.
Can a star exist outside a galaxy?
Answer: No, not all stars are in a galaxy. They may have once belonged to a galaxy, but they are not a part of it any more. Some of these so-called “stellar outcasts” or “intergalactic stars” have actually been observed by NASA’s Hubble Space Telescope.
What is the closest star to Earth?
Alpha Centauri AOf the three stars in the system, the dimmest – called Proxima Centauri – is actually the nearest star to the Earth. The two bright stars, called Alpha Centauri A and B form a close binary system; they are separated by only 23 times the Earth – Sun distance.
Will humans go extinct?
The short answer is yes. The fossil record shows everything goes extinct, eventually. Almost all species that ever lived, over 99.9%, are extinct. … Humans are inevitably heading for extinction.
What is the farthest thing in space?
The star, harbored in a very distant spiral galaxy, is so far away that its light has taken 9 billion years to reach Earth. It appears to us as it did when the universe was about 30 percent of its current age. Icarus, whose official name is MACS J1149+2223 Lensed Star 1, is the farthest individual star ever seen.
Can we breathe on Mars?
By comparison, Mars’ atmosphere is 95 percent carbon dioxide. … “There’s no free oxygen in the Martian atmosphere. You cannot breathe this gas. You would die of hypoxia within minutes.”
Can a human live on Neptune?
Neptune, like the other gas giants in our solar system, doesn’t have much of a solid surface to live on. But the planet’s largest moon, Triton, could make an interesting place to set up a space colony. … Though there are slight winds in Triton’s thin atmosphere, you wouldn’t feel any breeze while standing on the surface.
What is the oldest thing in the universe?
The search for extremely distant galaxies continues today. 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 are the 12 planets?
If the resolution is approved, the 12 planets in our solar system listed in order of their proximity to the sun would be Mercury, Venus, Earth, Mars, Ceres, Jupiter, Saturn, Uranus, Neptune, Pluto, Charon, and the provisionally named 2003 UB313.