How long would it take humans to travel a light-year? 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. Is traveling a light-year...
How many years are in a 1 light-year? How long is a light-year in Earth years? 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....
Will humans ever travel light speed? So will it ever be possible for us to travel at light speed? Based on our current understanding of physics and the limits of the natural world, the answer, sadly, is no. What happens if...
Why can no object travel faster than the speed of light? Hence, an object moving at the speed of light through space experiences no time at all or in other words is frozen in time. So, the real reason why we...
Can an object with mass move the speed of light? In fact, no object with any finite rest mass can move at the speed of light. That is why all the particles that move at the speed of light (e.g. photons)...
What was Stephen Hawking’s theory about time? He says that space-time can begin and end at a singularity (opens in new tab), and what’s more he can prove it. A singularity is an infinitely small and infinitely dense point. It literally...
Why is it impossible to go back in time? The law of causality follows from the fact that nothing can be faster than the speed of light. The law states that the effect of an action can only occur after the...
Is light speed travel theoretically possible? Based on our current understanding of physics and the limits of the natural world, the answer, sadly, is no. According to Albert Einstein’s theory of special relativity, summarized by the famous equation E=mc2, the speed...
What will happen if we travel at the speed of light? If an object ever did reach the speed of light, its mass would become infinite. And as a result, the energy required to move the object would also become infinite:...
How many light years would it take to go to Mars? Just divide the time in seconds light takes between Earth and Mars, by the number of seconds within one year: 365. 25×24×60×601333=4. 2×10−5 light years. How long does it take...