What is 28 million light-years away?
The potential exoplanet, called M51-ULS-1b, lies 28 million light-years away in the spiral galaxy Messier 51 (M51), also known as the Whirlpool galaxy. The closest galaxy is the recently discovered Canis Major dwarf galaxy, which is only 25,000 light-years away. So it would take 25,000 years to get there if you traveled at the speed of light. Actually, that’s the amount of time it would take from the perspective of the outside world. The Milky Way is about 1,000,000,000,000,000,000 km (about 100,000 light years or about 30 kpc) across. The Sun does not lie near the center of our Galaxy. Earlier this year, astronomers found an absolute monster of a galaxy. Lurking some 3 billion light-years away, Alcyoneus is a giant radio galaxy reaching 5 megaparsecs into space. That’s 16.3 million light-years long, and it constitutes the largest known structure of galactic origin. Light-year is the distance light travels in one year. Light zips through interstellar space at 186,000 miles (300,000 kilometers) per second and 5.88 trillion miles (9.46 trillion kilometers) per year.
How far is 1 light-year from Earth?
A light-year is the distance a beam of light travels in a single Earth year, which equates to approximately 6 trillion miles (9.7 trillion kilometers). A light year is the distance light travels in one year (365 days). It often gets misused as a unit of time, likely because ‘year’ is right there in the name. It will always take light 1 year to travel a distance of 1 light year. 1 Answer. 9-sd approximation to Earth year is 365.256363 days. So, 4 ly = 1461.02545 light days, nearly. The light that travels the longest gets stretched by the greatest amount, and the object that emitted that light is now at a greater distance because the universe is expanding. We can see objects up to 46.1 billion light-years away precisely because of the expanding universe. ![Part]()
How much time is 20 light-years?
| Conversions Table |
| 20 Light Years to Light Hours = 175320 |
900 Light Years to Light Hours = 7889400 |
| Unit Descriptions |
| 1 Light Hour: 1 Light hour is 1.079 252 8488 x 1012 meters (SI unit). Distance light travels in a vacuum in one hour. |
1 Light Year: 1 Light year is 9.460 730 472 5808 x 1015 meters (SI unit). Distance light can travel in a vacuum over a period of 365.25 days. |
(3) Time to travel the distance of 2.5 million light years = (5.88×10^12 miles/LY) x (2.5×10^6 miles) x (1/186,000 miles per second) x (1//60 seconds per minute) x (1/60 minutes per hour) = 21,953,405,017.92115 hours, or, 914,725,209.0800478 days, or, 2,506,096.46323008 years. Since light travels at about 186,300 miles per second, with 86,400 seconds per day and about 365 days per year, that works out at about: 186300×86400×365≈5,875,000,000,000 miles.
How far is 500 light-years?
SInce light-year is the distance travelled by the light in one year while travelling with the speed of light i.e. 3×108m/s 3 × 10 8 m / s . It would take 500 years to travel 500 light-year distance at the speed of light. A light-year (ly) is the distance that light can travel in one year. In one year, light travels about 5,880,000,000,000 miles or 9,460,000,000,000 kilometers. So, this distance is 1 light-year. For example, the nearest star to us is about 4.3 light-years away. This duration is a bit of a problem, as it makes space exploration a painstakingly slow process. Even if we hopped aboard the space shuttle discovery, which can travel 5 miles a second, it would take us about 37,200 years to go one light-year. 186,000 miles * 60 seconds = 11,160,000 miles/minute So light can travel 18,000,000 kilometers in one minute! Let’s see how many light minutes Earth is from the Sun. As it takes a really long time for light to travel we can essentially look way back in time from when stars and planets were formed after the Big Bang. The light that reaches the James Webb space telescope may have traveled millions of miles from a star that no longer exists.
| GN-z11 |
| Distance |
≈32 billion ly (9.8 billion pc) (present proper distance) ≈13.4 billion ly (4.1 billion pc) (light-travel distance) |
| Apparent magnitude (V) |
25.8H |
| Characteristics |
| Type |
Irregular |
How far away is 32 billion light-years?
| GN-z11 |
| Distance |
≈32 billion ly (9.8 billion pc) (present proper distance) ≈13.4 billion ly (4.1 billion pc) (light-travel distance) |
| Apparent magnitude (V) |
25.8H |
| Characteristics |
| Type |
Irregular |
| Parameter |
TT + lowP |
TT, TE, EE + lowP |
| Age of the universe (Ga) |
13.813±0.038 |
13.813±0.026 |
| Hubble constant (km⁄Mpc⋅s) |
67.31±0.96 |
67.27±0.66 |
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