- How old is the oldest galaxy?
- Why can’t we see the sun in space?
- What is the most powerful thing in the universe?
- How many galaxies do we know exist?
- How old is our world?
- What is the coldest thing in the universe?
- Why is space black?
- How far can humans see into space?
- How do galaxies die?
- What does space smell like?
- What is the oldest type of galaxy?
- How old is space?
- How old is a God?
- What is 6000 light years away?
- What are the 3 main galaxies?
- Is the sun black?
- What are we looking at when we see the Milky Way?
- Is the Milky Way the oldest galaxy?
- What is the oldest part of the universe?
- Does time have an end?
- What are the 4 types of galaxies?
How old is the oldest galaxy?
12.91 billion yearsLike all the other galaxies on this list, at the time of its discovery, SXDF-NB1006-2 was the oldest known galaxy in the universe.
It is 12.91 billion years old and started to form about 800 million years after the Big Bang..
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.
What is the most powerful thing in the universe?
That’s about the same amount of energy in 10 trillion trillion billion megaton bombs! These explosions generate beams of high-energy radiation, called gamma-ray bursts (GRBs), which are considered by astronomers to be the most powerful thing in the universe.
How many galaxies do we know exist?
100 billion galaxiesAll in all, Hubble reveals an estimated 100 billion galaxies in the universe or so, but this number is likely to increase to about 200 billion as telescope technology in space improves, Livio told Space.com.
How old is our world?
4.543 billion yearsEarth/Age
What is the coldest thing in the universe?
The protoplanetary Boomerang Nebula, located 5,000 light-years from Earth, holds the record for coldest known object in the Universe. Outflows of gas, streaming out from the central dying star, reach temperatures below -270 degrees Celsius.
Why is space black?
The daytime sky is blue because light from the nearby Sun hits molecules in the Earth’s atmosphere and scatters off in all directions. … At night, when that part of Earth is facing away from the Sun, space looks black because there is no nearby bright source of light, like the Sun, to be scattered.
How far can humans see into space?
30 billion light-years awayToday, the most distant objects we can see are more than 30 billion light-years away, despite the fact that only 13.8 billion years have passed since the Big Bang. The farther a galaxy is, the faster it expands away from us and the more its light appears…
How do galaxies die?
The process repeats: Gravity condenses gas into galaxies and stars, stars blow up and kick the gas out, gravity cycles the gas back in and makes new stars. … Without gas, it can’t form new stars; the old stars live out their lives and die, and eventually the galaxy dies too.
What does space smell like?
sweet-smelling welding fumes’, ‘burning metal’, ‘a distinct odour of ozone, an acrid smell’, ‘walnuts and brake pads’, ‘gunpowder’ and even ‘burnt almond cookie’. Some astronauts have likened the smells of space to walnuts. Image source: LubosHouska; CC0.
What is the oldest type of galaxy?
GN-z11The oldest and farthest galaxy ever discovered is an irregular type of galaxy called GN-z11. It is 32 billion light-years / 9.8 billion parsecs away from us. It is estimated that the galaxy formed just around 400 million years after the Big Bang.
How old is space?
13.7 billion yearsMeasurements made by NASA’s WMAP spacecraft have shown that the universe is 13.7 billion years old, plus or minus about 130,000 years.
How old is a God?
about 3,350 years oldGod as a single all-powerful entity is about 3,350 years old. The first monotheistic religion was that of Pharaoh Akhenaten (Amenhotep IV, 1364-1347 B.C.) in Egypt. It’s possible that the Israelites borrowed the concept of monotheism from his descendants after Egypt conquered Canaan.
What is 6000 light years away?
Scientists think that this may be the oldest star in the known universe. It is located about 6,000 light-years away from Earth. Astronomers have found what appears to be one of the oldest known stars in the universe.
What are the 3 main galaxies?
Galaxies are classified by shape. There are three general types: elliptical, spiral, and irregular. Perhaps the most familiar kind of galaxy are spiral galaxies. They have a distinctive shape with spiral arms in a relatively flat disk and a central “bulge”.
Is the sun black?
As with all matter, the sun emits a “black body spectrum” that is defined by its surface temperature. A black body spectrum is the continuum of radiation at many different wavelengths that is emitted by any body with a temperature above absolute zero. … So one might say that the sun is blue-green!
What are we looking at when we see the Milky Way?
So – if we’re looking in a dark sky – when we look toward the galactic disk, we see the starry band of the Milky Way. And when we look up or down – away from the flat disk of the galaxy – we’re also seeing Milky Way stars. All of the stars we see with the eye alone belong to our Milky Way galaxy.
Is the Milky Way the oldest galaxy?
Our universe is about 13.8 billion years old, so most galaxies formed when the universe was quite young! … 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.
What is the oldest part of the universe?
With a redshift of z = 8.2, at the time of observation, the burst was the most distant known object of any kind with a spectroscopic redshift. GRB 090423 was also the oldest known object in the Universe, apart from the methuselah star. As the light from the burst took approximately 13 billion years to reach Earth.
Does time have an end?
“Time is unlikely to end in our lifetime, but there is a 50% chance that time will end within the next 3.7 billion years,” they say. That’s not so long! It means that the end of the time is likely to happen within the lifetime of the Earth and the Sun. … At least, not for another 3.7 billion years.
What are the 4 types of galaxies?
In 1936, Hubble debuted a way to classify galaxies, grouping them into four main types: spiral galaxies, lenticular galaxies, elliptical galaxies, and irregular galaxies. More than two-thirds of all observed galaxies are spiral galaxies.