- What was before the universe?
- Is the sun black?
- What is the oldest object in the universe?
- Will the Milky Way ever die?
- What is a dead galaxy?
- How old is our galaxy?
- Is the Milky Way the oldest galaxy?
- Do galaxies die?
- What happens to poop in space?
- Which is the oldest galaxy in the universe?
- Why can’t we see the sun in space?
- How old is the oldest universe?
- What does space smell like?
- What will happen when two galaxies collide?
- Can the universe be older than 14 billion years?
What was before the universe?
The initial singularity is a gravitational singularity predicted by general relativity to have existed before the Big Bang and thought to have contained all the energy and spacetime of the Universe..
Is the sun black?
As with all matter, the sun emits a “black body spectrum” that is defined by its surface temperature. … So one might say that the sun is blue-green! This maximum radiation frequency is governed by the sun’s surface temperature, around 5,800K.
What is the oldest object 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.
Will the Milky Way ever die?
But new stars will pop up, too, and shine, and keep the galaxy alive and rife with stars far into the future. But even our own Milky Way will cease to exist: first as we know it, and later on, entirely. When enough time passes, there will be no stars, stellar remnants, or even black holes left at all.
What is a dead galaxy?
Over time, they somehow change their structure and their shape, going from spiral galaxies like the Milky Way to big, bloated, old galaxies that have an elliptical shape. These old galaxies somehow stop forming stars, and become what we call quiescent, or “dead”.
How old is our galaxy?
13.51 billion yearsMilky Way/Age
Is the Milky Way the oldest galaxy?
Astronomers believe that our own Milky Way galaxy is approximately 13.6 billion years old. The newest galaxy we know of formed only about 500 million years ago.
Do galaxies die?
In time, any given galaxy begins to run out of recyclable gas. Without gas, it can’t form new stars; the old stars live out their lives and die, and eventually the galaxy dies too. … The galaxies breathe gas in and out, and their stars burn until their gas is gone. Within a galaxy, relatively dense gases fuel star birth.
What happens to poop in space?
The seated space toilet, meant for pooping, has a fan connected to it that creates the suction. Waste ends up in a plastic bag that astronauts push down into a solid waste container, which is changed “roughly every 10 days,” according to Cristoforetti. (Urine gets recycled, she noted.)
Which is the oldest galaxy in the universe?
GN-z11GN-z11 is currently the oldest and most distant known galaxy in the observable universe. GN-z11 has a spectroscopic redshift of z = 11.09, which corresponds to a proper distance of approximately 32 billion light-years (9.8 billion parsecs).
Why can’t we see the sun in space?
You cannot see sun with bare eye in space as we humans always see reflected light. In fact everything we see is reflective light. When a light Ray falls on a object one Spectre or a particular color is reflected which enters our eyes and then we understand that color.
How old is the oldest universe?
about 13.8 billion yearsSummary: New research suggest the universe is about 13.8 billion years old, according to researchers using observations from the Atacama Cosmology Telescope (ACT) in Chile. Big Bang illustration (stock image).
What does space smell like?
“Space,” astronaut Tony Antonelli has said, “definitely has a smell that’s different than anything else.” Space, three-time spacewalker Thomas Jones has put it, “carries a distinct odor of ozone, a faint acrid smell.” Space, Jones elaborated, smells a little like gunpowder. It is “sulfurous.”
What will happen when two galaxies collide?
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 the universe be older than 14 billion years?
The uncertainty on the age figure is less than 100 million years, so even though it might be plausible that the Universe is slightly older-or-younger, it’s extraordinarily improbable to get up to 14.5 billion years.