... Unusual Spires Found on Comet Wild 2 . ... How did unusual spires form on comet Wild 2? ... An anelemma is that figure-8 curve that you get when you mark the position of the Sun at the same time each day throughout planet Earth's year. ... But when a bright comet passed in front of a bright star cluster last month, binoculars and cameras were able to show off their marked differences in dramatic fashion. Elliptical Galaxy M87 . ... Usually it is the Earth's Moon that eclipses the Sun. ...