- Who created the universe?
- How do we know the age of the universe?
- How old is our galaxy?
- What is the oldest thing in the universe?
- Does time have an end?
- What will happen in 100 trillion years?
- How old is the youngest star?
- What is the biggest thing in the universe?
- How do they know the universe is 13.7 billion years old?
- How long will the universe last?
- What is older than the universe?
- Does the universe have an end?
Who created the universe?
In his 1988 book, A Brief History of Time, Hawking had seemed to accept the role of God in the creation of the universe.
But in the new text, co-written with American physicist Leonard Mlodinow, he said new theories showed a creator is “not necessary”..
How do we know the age of the universe?
Astronomers estimate the age of the universe in two ways: 1) by looking for the oldest stars; and 2) by measuring the rate of expansion of the universe and extrapolating back to the Big Bang; just as crime detectives can trace the origin of a bullet from the holes in a wall.
How old is our galaxy?
13.51 billion yearsMilky Way/Age
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.
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 will happen in 100 trillion years?
We can look out into the Milky Way and see stars forming all around us. … And so, in about 100 trillion years from now, every star in the Universe, large and small, will be a black dwarf. An inert chunk of matter with the mass of a star, but at the background temperature of the Universe.
How old is the youngest star?
It’s the youngest neutron star ever discovered: 33 years old. The Cassiopeia A supernova remnant was not visible to the naked eye, but astronomers have determined … [+]
What is the biggest thing in the universe?
The biggest supercluster known in the universe is the Hercules-Corona Borealis Great Wall. It was first reported in 2013 and has been studied several times. It’s so big that light takes about 10 billion years to move across the structure. For perspective, the universe is only 13.8 billion years old.
How do they know the universe is 13.7 billion years old?
The scientists studied an image of the oldest light in the universe to confirm its age of 13.8 billion years. This light, the “afterglow” of the Big Bang, is known as the cosmic microwave background and marks a time 380,000 years after the universe’s birth when protons and electrons joined to form the first atoms.
How long will the 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.
What is older than the universe?
Called the Methuselah star, HD 140283 is 190.1 light-years away. Astronomers refined the star’s age to about 14.3 billion years (which is older than the universe), plus or minus 800 million years. Image released March 7, 2013.
Does the universe 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).