On Oct. 19, Comet Siding Spring (otherwise known as C/2013 A1) will pass within 87,000 miles of Mars, which is roughly one-third the distance between Earth and the moon, according to Space.com.
"Think about a comet that started its travel probably at the dawn of man and it's just coming in close now," Carey Lisse, a senior astrophysicist at Johns Hopkins University, told The Associated Press.
Siding Spring will be traveling at speeds as high as 126,000 miles per hour and should be closest to Mars around 2:27 p.m. Eastern Time, ABC News reports.
The rest here; Monster Comet Siding Spring Makes a Once-In-A-Million-Years Swing By Mars This Weekend - weather.com
"Think about a comet that started its travel probably at the dawn of man and it's just coming in close now," Carey Lisse, a senior astrophysicist at Johns Hopkins University, told The Associated Press.
Siding Spring will be traveling at speeds as high as 126,000 miles per hour and should be closest to Mars around 2:27 p.m. Eastern Time, ABC News reports.
The rest here; Monster Comet Siding Spring Makes a Once-In-A-Million-Years Swing By Mars This Weekend - weather.com