A recent and famous image of HL Tau in deep space marks the first time we've seen a forming planetary system, according to a team of astrophysicists who found that circular gaps in a disk of dust and gas swirling around the young star HL Tau are in fact made by forming planets.
The image of HL Tau, taken in October 2014 by the state-of-the-art Atacama Large Millimeter/submillimeter Array (ALMA) located in Chile's Atacama Desert, sparked a flurry of scientific debate.
The HL Tau system is less than a million years old, about 17.9 billion kilometres in radius and resides 450 light years from Earth in the constellation Taurus.
