An international team of scientists working with the Event Horizon Telescope project have been able to measure the radius of a black hole for the first time. It was in 1781 that astronomer Charles ...

Big problems sometimes come in small packages. The problem with which physicists must now concern themselves measures a mere 0.0350 millionth of a millionth of a millimetre. This is precisely the ...

Measuring the Sun is tricky business, as direct observations rely on solar eclipses to get an accurate measurement of the Sun’s light-emitting photosphere. However, measurements in the 1990s using ...

Batygin & Brown (2016) suggested the existence of a new planet in our solar system that is supposed to be responsible for the perturbation of eccentric orbits of small outer bodies. The main challenge ...

It took an array of four radio dishes positioned around the globe and an international team of astronomers to do it, but it was well worth the effort: Astronomers have measured the radius of a ...