Keywords

1.Astronomers~~ a physicist who studies astronomy
2.Clumping ~~ cluster, constellate, flock, clump
3.Terrestrial ~~~of or relating to or characteristic of the planet Earth or its inhabitants; "planetary rumblings
4.Infrared~~~ the infrared part of the electromagnetic spectrum; electromagnetic wave frequencies below the visible range
5.Sulfides~~~ a compound of sulphur and some other element that is more electropositive
6.Telescope~~ a magnifier of images of distant objects
7.Spectrometer~~~ spectroscope for obtaining a mass spectrum by deflecting ions into a thin slit and measuring the ion current with an electrometer
8.Pristine~~ immaculately clean and unused~
9.Jupiter~~~ the largest planet and the 5th from the sun; has many satellites
10.~huge belt ~~unusually great in size or amount or degree or especially extent or scope