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How how many miles would it take to travel 1 light year from earth and 1 light year back?
Wiki User
∙ 7y ago
WikiAnswers contributors enlighten us:
- 2 years - traveling at the speed of light (not taking into account pit-stops for coffee).
- Of course it depends on how fast the object is traveling. In one of the NASA Space Shuttles, about 76,526 earth years(38,263 earth years one way). 1 light-year is 5.8 trillion miles and the maximum speed of a NASA Space Shuttle is 17,500 miles per hour.
The fastest unmanned space craft traveled 157,000 mph. At that rate, there and back would take only 8,500 earth years. So if you were a Mesopotamian farmer in 6,500 BC, you'd be getting home right about now.
- Not only would this depend on the speed you are traveling, but it also depends on your point of view: If you were to be inside a spacecraft traveling at the speed of light, it would take you 2 years, but it would seem as if no time at all had elapsed!
- At our current level of technology, and allowing for no fundamental breakthroughs in physics but allowing for reasonable engineering development along known lines, the fastest spacecraft that we are currently capable of building would be an Orion Nuclear Pulse Rocket. Wikipedia has a good general description at the link below, but the basic concept is that we build a REALLY BIG spacecraft - perhaps twice the mass of a current US Navy aircraft carrier - and set off nuclear bombs behind a gigantic bowl and shock absorber. Such a device ought to be able to attain about 10% of the speed of light, but it would take about 2 years to reach that speed, and two years to slow down and stop. We would NEVER send out such a ship one light-year out and come back; we'd keep going to a potentially habitable star, but IF we needed to, we could probably do it in about 100 years.
Wiki User
∙ 13y ago
Wiki User
∙ 12y ago1 light year is defined as the distance that light travels through vacuum in
one year. This tells us that in vacuum, such as interplanetary space, it takes
light one year to travel a distance of one light year.
Wiki User
∙ 8y agoWiki User
∙ 7y agoApprox 11.7 trillion miles.
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How long does it take light to travel from earth to Neptune?
Neptune has an average distance from the Sun of 2.8 billion miles and the earth is 0.09 billion miles from the sun so it is 2.71 billion miles from the earth. Light travels at 186,000 miles per second. So 2.71 x 109 divided by 186,000 = 14570 seconds = 4.05 hours = 4.62 x 10-4 years.
If the earth is 25000 miles around and lightning travels at 670616629.384 miles per second how many times would it circle the earth in one second?
LIGHT travels at about 670,616,629.384 miles per HOUR, not per second!Converting m.p.h. to miles per second, then the approximate speed of light would be about 186,282 miles per second.IF lightning travels at the speed of light (which it doesn't!) then 186,282 miles in one second divided by the approximate circumference of the earth, i.e. 25,000 miles, equals 7.45, or say seven and a half times round the earth, or once every 1/7.45 = 0.13 seconds.However! Lightning does not travel as fast as light! It has been approximated that lightning, on average, travels at about half the speed of light. So, one continuous flash of lightning, in a tight circle close to the earth, could travel round the earth 3.725 times, approximately.-----------------------------------------Note: I agree the " tethering " of the cloud and the earth via the electrons and protons from each, does not travel at the speed of light.However; this connection between the two creates an "electrical bolt" which in turn creates a flash of light, which, as the name suggests, does travel at 300,000 kms/sec i.e. the speed of light.-------------------------------------------For more information, see 'Related questions' and 'Related links' below.
What is travel time from sun to earth?
Light takes about 8 minutes to travel from Earth to the sun. The sun is about 93 million miles away, so it would take about 177 years to get to the sun in a car traveling at 60 miles per hour, and about 21.5 years to get to the sun in an airplane traveling at 500 miles per hour. (These are just comparisons; cars and airplanes don't travel in outer space.)
How far away from earth is zeta reticuli?
The Zeta Reticuli binary star system is located 39.17 light-years, or 230,265,762,450,700.25 miles (That's 230 trillion miles) away from the Earth. At that distance it would take a Saturn V rocket 1,072,165.5 years to travel there.
For the moon to travel at the speed of light how long would it take to orbit the earth?
1 second
How long would it take to get to the sun if you could travel at the speed of light?
Sunlight takes 8.4 minutes to travel 93 million miles to Earth. It would take us that long to reach the Sun at light speed.
What is meant by 10 000 light years away?
A light year - is the distance a pulse of light would travel in an earth 'year'. This equates to a distance of5,869,713,600,000 mile in a single year. Something 10,000 light years from earth would be at a distance of58,697,136,000,000,000 miles - or roughly 58,697 BILLION miles away!
How long does it take light to travel from earth to Neptune?
Neptune has an average distance from the Sun of 2.8 billion miles and the earth is 0.09 billion miles from the sun so it is 2.71 billion miles from the earth. Light travels at 186,000 miles per second. So 2.71 x 109 divided by 186,000 = 14570 seconds = 4.05 hours = 4.62 x 10-4 years.
How long would it take to travel at the speed of light from Earth to Aldebaran?
It would take 65 years 11 months to travel to Aldebaran from Earth traversing at the speed of light.
How long does it take for light to travel 50 billion miles?
As light travels about 186,000 miles per second, it would take about 3 days, 2 hours and 40 minutes for light to travel 50,000,000,000 miles.As light travels about 186,000 miles per second, it would take about 3 days, 2 hours and 40 minutes for light to travel 50,000,000,000 miles.As light travels about 186,000 miles per second, it would take about 3 days, 2 hours and 40 minutes for light to travel 50,000,000,000 miles.As light travels about 186,000 miles per second, it would take about 3 days, 2 hours and 40 minutes for light to travel 50,000,000,000 miles.As light travels about 186,000 miles per second, it would take about 3 days, 2 hours and 40 minutes for light to travel 50,000,000,000 miles.As light travels about 186,000 miles per second, it would take about 3 days, 2 hours and 40 minutes for light to travel 50,000,000,000 miles.As light travels about 186,000 miles per second, it would take about 3 days, 2 hours and 40 minutes for light to travel 50,000,000,000 miles.As light travels about 186,000 miles per second, it would take about 3 days, 2 hours and 40 minutes for light to travel 50,000,000,000 miles.As light travels about 186,000 miles per second, it would take about 3 days, 2 hours and 40 minutes for light to travel 50,000,000,000 miles.As light travels about 186,000 miles per second, it would take about 3 days, 2 hours and 40 minutes for light to travel 50,000,000,000 miles.As light travels about 186,000 miles per second, it would take about 3 days, 2 hours and 40 minutes for light to travel 50,000,000,000 miles.
How long would it take the speed of light to travel 2780.82 miles?
The speed of light is ~186,282 Miles per second. You do the math.
What do light rays need to travel through space?
If light rays did not travel through space there would be no way for them to reach Earth.
If the earth is 25000 miles around and lightning travels at 670616629.384 miles per second how many times would it circle the earth in one second?
LIGHT travels at about 670,616,629.384 miles per HOUR, not per second!Converting m.p.h. to miles per second, then the approximate speed of light would be about 186,282 miles per second.IF lightning travels at the speed of light (which it doesn't!) then 186,282 miles in one second divided by the approximate circumference of the earth, i.e. 25,000 miles, equals 7.45, or say seven and a half times round the earth, or once every 1/7.45 = 0.13 seconds.However! Lightning does not travel as fast as light! It has been approximated that lightning, on average, travels at about half the speed of light. So, one continuous flash of lightning, in a tight circle close to the earth, could travel round the earth 3.725 times, approximately.-----------------------------------------Note: I agree the " tethering " of the cloud and the earth via the electrons and protons from each, does not travel at the speed of light.However; this connection between the two creates an "electrical bolt" which in turn creates a flash of light, which, as the name suggests, does travel at 300,000 kms/sec i.e. the speed of light.-------------------------------------------For more information, see 'Related questions' and 'Related links' below.
How long does it take light to circle earth?
The distance around the earth at the equator is 24,902 miles. Light travels in a straight line at 186,282 miles per second in a vacuum. So 24902 / 186262 is 0.13 seconds. To get a pulse of light to travel around the earth, you'd have to have a fiber-optic cable running around the earth's equator. Light travels a bit slower in optical glass than in a vacuum so it would take a pulse of light a bit longer to make one trip around the earth. In reality, light traveling in an optical fiber can't travel that far without being degraded. So the actual travel time factoring in the time the light pulse would have to be within an amplifier every sixty miles or so would slow the pulse down a bit more. Still it's a lot faster than a speeding bullet!
What is travel time from sun to earth?
Light takes about 8 minutes to travel from Earth to the sun. The sun is about 93 million miles away, so it would take about 177 years to get to the sun in a car traveling at 60 miles per hour, and about 21.5 years to get to the sun in an airplane traveling at 500 miles per hour. (These are just comparisons; cars and airplanes don't travel in outer space.)
What is the distance of the moon from Earth?
To find the distance between the Earth and Moon you would use Lunar distance. Lunar distance is the measurement from and to the Earth and Moon which calculates 238,900 miles
Where would you be34 hours from earth at light speed?
well the speed of light is roughly 186000 miles/second so you would be about 22766400000 miles away
