How long does it take for light to reach us from the very edge of the universe?
So if we simply wanted to know how long it would take light to reach the edge of the visible universe, the answer would be 47 billion years – the same time it has taken the furthest light we currently know of to have reached us today.
What is the horizon visibility of a standing person?
For an observer standing on the ground with h = 1.70 metres (5 ft 7 in), the horizon is at a distance of 4.7 kilometres (2.9 mi). For an observer standing on the ground with h = 2 metres (6 ft 7 in), the horizon is at a distance of 5 kilometres (3.1 mi).
How far away can you see a ship at sea?
International waters are 12 nautical miles (22.2 km; 13.8 mi) from shore. This is largely because when on a ship (or about the same vantage point above the surface on shore), you can see a ship breach the horizon at about the 12 mile mark. (Both you and the ship are above sea level/horizon.)
Can you see the curvature of the moon while standing on it?
You can see the curvature of the earth while standing on the earth, so there is no reason you why shouldn’t be able to see the moon’s curvature while standing on the moon. Originally Answered: From what height can one see that the Earth is round?
Why can’t we see the edge of the universe?
This edge represents the limit of what we can see because the speed of light — even in an expanding Universe governed by General Relativity — only allows signals to travel so far over the Universe’s 13.8 billion year history. This distance is farther than 13.8 billion light-years because of the Universe’s expansion, but it’s still finite.
How far back in the universe can we see?
Most people assume that if the Universe has been around for 13.8 billion years since the Big Bang, then the limit to how far we can see will be 13.8 billion light-years, but that’s not quite right.
Are there parts of the universe that are not visible to US?
Most excitingly, there are parts of the Universe that are not yet visible today that will someday become observable to us. Even though it’s been billions of years since the Big Bang, there’s a cosmic limit to how far we can observe the objects that occupy our Universe.
What is the future visibility limit of the universe?
Based on the expansion rate, the amount of dark energy we have, and the present cosmological parameters of the Universe, we can calculate what we call the future visibility limit: the maximum distance we’ll ever be able to observe. Right now, in a 13.8 billion year old Universe, our current visibility limit is 46 billion light-years.