HomeLatest ThreadsGreatest ThreadsForums & GroupsMy SubscriptionsMy Posts
DU Home » Latest Threads » demwing » Journal
Introducing Discussionist: A new forum by the creators of DU
Page: 1

demwing

Profile Information

Gender: Male
Hometown: Venice, California
Current location: St. Petersburg, Florida
Member since: Fri Jul 2, 2004, 04:55 PM
Number of posts: 12,623

Journal Archives

Question about FTL Travel

Imagine a line (L) with three points (P1,P2,P3):



Earth is represented by P2, P1 and P3 represent crafts moving away from Earth at .75 the speed of light.

To an astronaut on craft P1, is P3 moving faster than light?

What if a third craft traveled at a 45 degree angle to L, stopped, turned around, and viewed P1 and P3?

It seems to me that from the perspective of the third craft, P1 and P3 are increasing the distance between themselves at a speed greater than the speed of light.

Knowing little to nothing about Physics, I don't know why my perspective is inaccurate, but I believe it must be. I'm confident that someone here can straighten me out!



Go to Page: 1