Staff Writer, Nathaniel DiazAstronomy /Astrophysics
The newly discovered comet, Siding Spring, will be observable tonight right after sunset by the planet Mars.
Or, you can watch via Slooh:
The Slooh Community Observatory will broadcast a double feature about Comet Siding Spring's close pass by Mars on Sunday (Oct. 19). The first Slooh webcast will start at 2:15 p.m. EDT (1815 GMT), and the second will begin at 8:30 p.m. EDT (0030 Oct. 20 GMT).