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How long does light take to travel 14 billion miles?
NASA’s long-lived spacecraft reaches another milestone NASA’s extraordinarily long-lived Voyager 1 probe this week passed 14 billion miles from Earth. It takes light nearly 21 hours to reach the spacecraft, making commanding the thing increasingly tricky.
Can we see a galaxy that is 15 billion light-years away?
Because looking 15 billion light-years away means looking to a time before the universe existed. Why can’t we see a galaxy 15 billion light-years away? Because no galaxies exist at such a great distance.
How far away is 14 billion miles?
Voyager 1 is now over 22.5 billion kilometers (14 billion miles) from Earth, soaring through a diffuse mixture of particles and gas called the interstellar medium. This hum, recorded since 2017, is thought to be the result of plasma waves in this cosmic soup.
How many light years away is the star HD 140283?
Called the Methuselah star, HD 140283 is 190.1 light-years away. Astronomers refined the star’s age to about 14.3 billion years (which is older than the universe), plus or minus 800 million years.
Is HD 140283 older than the universe?
A constant of 67.74 km per second per megaparsec would lead to an age of 13.8 billion years, whereas one of 73, or even as high as 77 as some studies have shown, would indicate a universe age no greater than 12.7 billion years. It’s a mismatch that suggests, once again, that HD 140283 is older than the universe.
How old is the Methuselah star?
Called the Methuselah star, HD 140283 is 190.1 light-years away. Astronomers refined the star’s age to about 14.3 billion years (which is older than the universe), plus or minus 800 million years. Image released March 7, 2013.
How old is the universe according to the Hubble constant?
A higher value for the Hubble Constant indicates a shorter age for the universe. A constant of 67.74 km per second per megaparsec would lead to an age of 13.8 billion years, whereas one of 73, or even as high as 77 as some studies have shown, would indicate a universe age no greater than 12.7 billion years.