How many Earth years is a Lightyear?
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 the oldest planet in the universe?
At 12.7 billion years old, planet Psr B1620-26 B is almost three times the age of Earth, which formed some 4.5 billion years ago. This exoplanet, the oldest ever detected in our Milky Way galaxy, has been nicknamed “Methuselah” or the “Genesis planet” on account of its extreme old age.
What planet takes 7 years to orbit the sun?
What are the orbital lengths and distances of objects in our solar system?
| OBJECT | Distance from Sun (average) | Amount of time for one complete orbit of the Sun (one “year.”) |
|---|---|---|
| Sun | 0 miles | |
| Mercury | 36,800,000 miles | 3 Earth months |
| Venus | 67,200,000 miles | 7 Earth months |
| Earth | 93,000,000 miles | 1 Earth year (365.25 days) |
What was the first planet in our galaxy?
Ancient Jupiter
What is older than the universe?
By combining the luminosity and spectral information with advanced models of star formation and evolution, the researchers estimated an age on the Methuselah Star of 14.46 ± 0.8 billion years, older than the accepted 13.799 billion year lifetime of the universe.
How old is the youngest star?
It’s the youngest neutron star ever discovered: 33 years old.
How old is the youngest 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.
What was before the universe?
The initial singularity is a singularity predicted by some models of the Big Bang theory to have existed before the Big Bang and thought to have contained all the energy and spacetime of the Universe.
Will our universe end?
If the Universe holds enough matter, including dark matter, the combined gravitational attraction of everything will gradually halt this expansion and precipitate the ultimate collapse. Over time, galaxies, then individual stars, will smash into each other more frequently, killing off any life on nearby planets.
Can we stop the heat death of the universe?
The heat death of the universe is not when the last star goes out, it’s when the universe reaches maximum entropy. By definition then, there’s no way of ‘surviving’ the event, because you’d have to be dead in the first place for the condition to have been reached.
How long does it take for heat to die in the universe?
10100 years