march, so how is it to discover something that old. >> there are two kinds of comments, the ones that come around, less than every 200 years, like haley's, that 75 years or so, haley comes by, but these comments are so far out there, really, you only catch them once, you catch them the first time that they're coming in because often, they'll fall into the sun or, once they're gone, they're not coming back forever or for 50,000 years. so it's this new telescope technology, amazing technology we have, that can pick up faint objects in the sky as they changed position, one night after the other, taking pictures of the entire sky every night, so it's because of that transient telescope, we call the, that were able to catch more of these and soon, will probably catch a lot more of these intruders from the edge of the solutions. them >> i keep looking at pictures because they're stunning. we have about 30 seconds left. i understand the comment can be differentiated by the stars because it has the steaking tale of dust and energized particles around it, as well as something called a green coma