What is outside the universe
The trite answer is that both space and time were created at the big bang about 14 billion years ago, so there is nothing beyond the universe. However, much of the universe exists beyond the observable universe, which is maybe about 90 billion light years across.
What is beyond the observable universe
Beyond our observable Universe lies the unobservable Universe, which ought to look just like the part we can see. The way we know that is through observations of the cosmic microwave background and the large-scale structure of the Universe.
How old is our universe
The age of the universe based on the best fit to Planck 2018 data alone is 13.787±0.020 billion years. This number represents an accurate "direct" measurement of the age of the universe, in contrast to other methods that typically involve Hubble's law and the age of the oldest stars in globular clusters.
Can we ever leave our galaxy
The technology required to travel between galaxies is far beyond humanity's present capabilities, and currently only the subject of speculation, hypothesis, and science fiction. However, theoretically speaking, there is nothing to conclusively indicate that intergalactic travel is impossible.
Is the universe Unlimited
There's a limit to how much of the universe we can see. The observable universe is finite in that it hasn't existed forever. It extends 46 billion light years in every direction from us. (While our universe is 13.8 billion years old, the observable universe reaches further since the universe is expanding).
What is the 4% observable universe
NEW YORK — All the stars, planets and galaxies that can be seen today make up just 4 percent of the universe. The other 96 percent is made of stuff astronomers can't see, detect or even comprehend. These mysterious substances are called dark energy and dark matter.
Why can we see 46 billion light-years away
The light that travels the longest gets stretched by the greatest amount, and the object that emitted that light is now at a greater distance because the universe is expanding. We can see objects up to 46.1 billion light-years away precisely because of the expanding universe.
How old is Milky
The age of the stars in NGC 6397, as determined by means of stellar evolution models, is 13,400 ± 800 million years. Adding the two time intervals gives the age of the Milky Way, 13,600 ± 800 million years.
How many years is 1 light year
For most space objects, we use light-years to describe their distance. A light-year is the distance light travels in one Earth year. One light-year is about 6 trillion miles (9 trillion km). That is a 6 with 12 zeros behind it!
How would a galaxy end
Without gas, it can't form new stars; the old stars live out their lives and die, and eventually the galaxy dies too. Galaxies sit in a bath of gas, the medium from which they were born and which fuels them. The galaxies breathe gas in and out, and their stars burn until their gas is gone.
Can the universe expire
Observations suggest that the expansion of the universe will continue forever. The prevailing theory is that the universe will cool as it expands, eventually becoming too cold to sustain life. For this reason, this future scenario once popularly called "Heat Death" is now known as the "Big Chill" or "Big Freeze".
Could the universe not end
The preponderance of evidence to date, based on measurements of the rate of expansion and the mass density, favors a universe that will continue to expand indefinitely, resulting in the "Big Freeze" scenario below. However, observations are not conclusive, and alternative models are still possible.
What is 95 of the universe
All the material we can see is just a small fraction of the universe. The rest, a full 95 percent, is invisible and mysterious. These are the enigmatic dark matter and dark energy.
Why can we see 46 billion light years away
The light that travels the longest gets stretched by the greatest amount, and the object that emitted that light is now at a greater distance because the universe is expanding. We can see objects up to 46.1 billion light-years away precisely because of the expanding universe.
How many years is 1 light-year
For most space objects, we use light-years to describe their distance. A light-year is the distance light travels in one Earth year. One light-year is about 6 trillion miles (9 trillion km). That is a 6 with 12 zeros behind it!
What is 1 light-year in human years
And it's 4.2 light years away nearly 24 trillion miles. So rather than talking about trillions and quadrillions of miles we use light. Years.
Why is the Milky Way so big
It was made from other galaxies.
In order for the Milky Way to achieve its current size and shape it has consumed other galaxies throughout its history. Our galaxy is currently consuming the Canis Major Dwarf Galaxy by adding the smaller galaxy's stars to its own spiral.
Is Milky White A Boy or a girl
Milky White is Jack's beloved cow who is as white as milk. She is so old that she doesn't produce milk anymore. Jack's mother tells Jack that they have no choice but to sell her. She shares an important role in the musical film, Into the Woods, and she is one of the four objects needed to break the Witch's curse.
How long is 1 second in light-years
For example, the light-second, useful in astronomy, telecommunications and relativistic physics, is exactly 299792458 metres or 1⁄31557600 of a light-year. Units such as the light-minute, light-hour and light-day are sometimes used in popular science publications.
How long is 40 light-years in human years
whence the travel time for 40 light years will be 40×30000016.8≈700000years.
Will humans ever leave the Milky Way
The technology required to travel between galaxies is far beyond humanity's present capabilities, and currently only the subject of speculation, hypothesis, and science fiction. However, theoretically speaking, there is nothing to conclusively indicate that intergalactic travel is impossible.
Has anyone left the galaxy
No human-made objects have left the Milky Way galaxy.
Will the universe last 1 trillion years
Roughly 1 trillion years from now, the last star will be born. In about 100 trillion years, the last light will go out. The bad news is that the universe is going to die a slow, aching, miserable death. The good news is that we won't be around to see it.
What happened 1 trillion years ago
At the cosmic origin, a trillion years ago, all that existed was an endless Light Ocean. Inexhaustible was this frozen supply of light available for black holes to continually build spheres and solar systems in galaxies.
How much longer will the universe last
Roughly 1 trillion years from now, the last star will be born. In about 100 trillion years, the last light will go out. The bad news is that the universe is going to die a slow, aching, miserable death. The good news is that we won't be around to see it.
