Users' questions

Could we see a galaxy that is 5 billion light-years away?

Could we see a galaxy that is 5 billion light-years away?

Astronomers have observed that a galaxy five billion light-years away from Earth has a magnetic field very similar to our own. We’ve never observed a coherent magnetic field in a galaxy this far away before, and the discovery provides critical insights into the formation and evolution of magnetism in the universe.

What galaxy is 1 billion light-years away?

The supercluster is about 1 billion light years away. An all-sky plot of the 60000 brightest galaxies shows how galaxies clump together into large supercluster formations.

What is 5 light-years away?

It works out to be 5878000,000,000 miles or 9461,000,000,00 0 kilometers. This means the distance a light beam would take 4 or 5 years to travel.

What galaxy is 65 million light-years away?

This enchanting spiral galaxy can be found in the constellation of Ursa Major (the Great Bear). Star-studded NGC 3972 lies about 65 million light-years away from Earth, meaning that the light that we see now left it 65 million years ago, just when the dinosaurs became extinct.

How far back in time can we see?

Therefore, the longer we wait, the farther we can see, as light travels in a straight line at the speed of light. So after 13.8 billion years, you’d expect to be able to see back almost 13.8 billion light years, subtracting only how long it took stars and galaxies to form after the Big Bang.

How long would it take to travel 100 light-years?

Some galaxies will have fallen over the cosmic horizon, where no amount of time would ever let you reach them. If you wanted to travel 100 trillion light years away, you could make the journey in 62 years.

How far is Earth in light-years?

about 6 trillion miles
Coe et al. For most space objects, we use light-years to describe their distance. A light-year is the distance light travels in one Earth year. One light-year is about 6 trillion miles (9 trillion km).

How is looking at stars looking back in time?

Because of the finite speed of light, when you gaze up into the night sky, you are looking into the past. The bright star Sirius is 8.6 light years away. That means the light hitting your eye tonight has been traveling for 8.6 years. When you look at that star tonight, you see it as it was at the time of your birth.

What is the oldest thing in the universe?

Astronomers have found the farthest known source of radio emissions in the universe: a galaxy-swallowing supermassive black hole.

What is the lifespan of the universe?

Data collected by Hyper Suprime-Cam give insight about the Universe. A number of Japanese scientists have recently suggested that the universe will last for at least 140 billion years to come, the Jordan News Agency, Petra, reported on September 27, 2018.