How long would it take light to travel from one end of the universe to the other?

A new study shows it would take 200,000 years for a spaceship traveling at the speed of light to go across the entire galaxy.

How long would it take for light to travel across the observable universe?

Forever. A light speed trip to the current edge of the observable universe would take some 46 billion years.

How long would it take to walk from one side of the universe to the other?

It would take you 500 million years at that speed. At a modest walking speed of 3 kilometers per hour, with no sleeping or days off, 18 trillion years or so. If you could use an ion drive and accelerate to 10\% of light speed then you could manage it in a half a million years.

How many years would it take to get out of the universe?

It’s Space Day, but traveling the vast entity that is space would take far longer than a single day. The nearest galaxy: 749,000,000 (that’s 749 million) years. The end of the known universe: 225,000,000,000,000 years (that’s 225 trillion) years.

Who discovered the speed of light?

astronomer Ole Roemer
In 1676, the Danish astronomer Ole Roemer (1644–1710) became the first person to measure the speed of light. Roemer measured the speed of light by timing eclipses of Jupiter’s moon Io.

How long would it take to travel to the edge of universe?

Forever. A light speed trip to the current edge of the observable universe would take some 46 billion years. The problem is that at its edge, the observable universe is expanding at a speed greater than the speed of light. As a result, by the time the light gets to where the edge is now, it will be even more than 46 billion years further out.

Does the universe expand at the speed of light?

For 13.8 billion years, that’s three times the speed of light. At best the universe expands at the speed of light which would be the same as having two cars travel at exactly 60 mph but having one car start traveling 1 min before the second.

How far can we see the universe?

We can’t see that far, but we can detect the traces left behind and draw conclusions, which makes it “observable”. In other words, our observable universe is roughly 93 billion light-years in diameter, but even if you traveled for 93 billion miles at the speed of light, would you be able to get there?

What light has ever traveled across the universe?

The only light we know to have gone “across the universe” is the CMB radiation imaging the first hydrogen / helium gas just forming from the plasma of the big bang. At the time, the universe was 380,000 years old.