The radius of the observable universe is about 15 billion light years.
That's 90 billion trillion miles or 1.35e+ 26 meters or 5.3149606299e+27 inches or 4.492133858e+26 feet or 4.4763779528e+26 yards or 1.25 e +28 centameters or 1.25 e + 29 mm. or 1.35 e + 32 micro meters or 1.35 e+35 nano meters or 1.35 e+38 picto meters or 1.3472083149 e+ 39 x unit or 1.35 e+ 50 yoctometer or 1.25 e+ 47 zepto meters.
Comments: That's not the usual answer, given by astronomers. They usually say "about 45 billion light years".
The AGE of the Universe is about 15 billion years, or more precisely about 13.7 billion years. So, light reaching us cannot have travelled more than about 13.7 billion light years.
However, the Universe has been expanding. Something that emitted light 13.7 billion years ago could NOW be as far away as about 45 billion light years.
No. The furthest "man" has gone is the moon.
Assuming you are referring to our Galaxy - The Milky Way. Light will take about 100,000 years to get from one side to the other.
A light year is how far light travels in a year. A light min is how far light travels in a minute. light speed is 186000 mile/sec, at this speed you have to calculate how far it would travel in one year or one minute
You simply can't - it is too far away, at least for current technology. However, the Andromeda Galaxy is a galaxy just like any other one - I see no big difference between being there, or being here in our own galaxy.
Traveling across the Milky Way galaxy at the speed of light would take approximately 100,000 years. However, with current technology, it is impossible for humans to travel at such speeds, so the actual time to traverse the galaxy would be much longer.
FAR FAR too long
FAR FAR too long
It can travel about 5.86 trillion miles in one year. This is a light year.
One light year, which is 9,500,000,000,000km, or 9.5 trillion kilometers.
It takes the sun to complete one orbit (a galactic year) of our home galaxy: 226 million years
Light travels approximately 9,460,706,958,078,329 meters in one year.
A light year is a measure of how far light can travel in one year. It is a phenomenal distance, and is used to describe how far away stars are from us.
It is the distance travelled by light in one year at a speed of 186,000 miles per second
How far does light travel in one hour
Your question seems to suggest that you think a "light year"is a length of time. It's not.It's a distance ... the distance light travels in a year.The distance is about 5,878,450,000,000 miles.I cannot travel nearly that far in one year.
A "Light year" is a distance. It's the distance light travels in one year, in vacuum.5,878,450,000,000 miles (rounded)
No. The furthest "man" has gone is the moon.