Next year is the 250th anniversary of James Cook’s voyage to the Pacific Ocean. One the things he did was contribute to a more accurate calculation of the distance between the Earth and the Sun by observing the transit of Venus.
Supernovae cause the biggest explosions in the universe, often out shining their host galaxies. There’s plenty of flavours of supernova and they aren’t all just big stars blowing up.
Our Sun has had a few outbursts that have knocked out power grids and telegraph networks as well as disrupted satellite communications. These are nothing compared to what stars similar to our Sun have been observed doing.
TESS was launched on a Falcon 9 rocket from SpaceX on 18 April. The satellite will survey the whole sky to look for exoplanets that transit their stars.
We are getting a better and better at understanding how planetary systems are formed. This article tracks the historic development of the heliocentric model and how that relates to understanding the formation of our own Solar System.
There are a range of space telescopes orbiting at the moment in and around the visible light spectrum. This article gives a quick look at some of them.