First Image of Planet Birth Shows Tightly Packed Worlds

When an image of the system HL Tau was unveiled last year, it sparked controversy over whether or not grooves in the disk of dust surrounding the star could be explained by the presence of newly formed giant planets. "The big question is, are we really seeing giant planets carving out the disk out of which they are forming?" lead author Daniel Tamayo, from the University of Toronto in Canada, had said in a presentation at the Emerging Researchers for Exoplanet Science Symposium hosted at Pennsyl