The strange orbits of some objects in the farthest reaches of our solar system, hypothesised by some astronomers to be shaped by an unknown ninth planet, can instead be explained by the combined gravitational force of small objects orbiting the Sun beyond Neptune, say researchers.
The alternative explanation to the so-called
A wee baby star at the tender age of just 2 million years has revealed itself to be quite the precocious little cosmic object.
Astronomers have discovered it has not one, but four planets in the protoplanetary disc of dust and gas that surrounds it - and they are all gargantuan,
For the second time this year, the five brightest planets can be seen at the same time. You can catch them by looking towards the western sky after sunset. The planets will form a line rising up from the horizon.
Mercury and Venus are low to the west, with bright Jupiter