You are here:

Astrophysics/confused

Advertisement


Question
Hi Steve
That’s a good explanation. Coming from England i’m not used to seeing rockets unless they’re on the end of a stick on November 5th, but I’m confident that you know your stuff. It would certainly make sense that crowds would gather to see a rocket take off. However, can you just re-assure me that you are not mistaken and that there is not something more unusual in this video, like a bigger version of the object i saw? The problem i’m having with your answer is that there are two occasions when the ground appears in the video and in the first image the object is just above a building, and when the building is seen again the light is far over to the right of it. While i would expect the rocket to move I would still of expected it to of been somewhere straighter?
Sorry to persistant.
Many thanks
David

Answer
Rockets quickly execute a turning maneuver in order to thrust parallel to the ground instead of straight up.  They have to get up to orbital velocity, around 7 km per second, parallel to the Earth's surface and not just straight up.  It takes somewhere around 12 minutes, and that video was only a little over a minute long.  It fits.

Astrophysics

All Answers


Answers by Expert:


Ask Experts

Volunteer


Steve Nelson

Expertise

Fusion, solar flares, cosmic rays, radiation in space, and stellar physics questions. Generally, nuclear-related astrophysics, but I can usually point you in the right direction if it's not nuclear-related or if it's nuclear but not astrophysics.

Experience

Currently a physics professor at the University of Texas of the Permian Basin. Doctoral dissertation was on a reaction in CNO-cycle fusion, worked in gamma-ray astronomy in the space science division of the naval research laboratory in the high-energy space environment branch.

Organizations
Physics professor at the University of Texas of the Permian Basin.

Education/Credentials
Ph.D. in physics, research was on nuclear fusion reactions important in stellar fusion.

©2012 About.com, a part of The New York Times Company. All rights reserved.