Sailing has been a mainstay of human history for millennia, so it's no surprise that scientists would apply it to traveling ...

This causes the frequency of the light to spread out. The amount of spectral spreading is known as the Dispersion Measure (DM), and the greater the DM the greater the distance. So we know the ...

In the process, their experiment included photons in 37 dimensions, taking science even further down this strange quantum ...

In today’s world, precision is more critical than ever, especially when it comes to advanced targeting and distance ...

The two keys to Edwin Hubble's breakthrough discovery were forged by others in the 1910s. The first key, the period-luminosity scale discovered by Henrietta Leavitt, allowed astronomers to ...

A new way to gauge distance using lasers can measure lengths of more than 100 kilometres to within a thousandth of the width of a human hair, and could be used to make better space telescopes.