Spacetime With Stuart Gary

*More clues about our interstellar visitor Astronomers have released new details about a mysterious interstellar visitor which sped through our solar system during September and October. The new observations show the object -- known as 1i/2017 U1 -- measures some 180 by 30 meters and is shaped like a fat cigar, half a city block long. *Why the star Regulus is almost ripping apart A new study of the star Regulus indicates it’s almost spinning fast enough to literally rip itself apart. The findings reported in the journal Nature Astronomy show the star has a spin rate of 96.5 per cent of its angular velocity needed for break-up. *Another gravity wave discovery from merging black holes Scientists have confirmed another detection of gravitational waves generated by the collision of two stellar mass back holes. This latest detection involved the merger of two relatively light black holes, with 7 and 12 times the mass of the Sun -- a billion light years away. *Pluto’s freezer explained A new study of Pluto’s atmosp