A) Some scientists suppose that the asteroids represent pieces of a planet that once existed but was torn apart a long time ago. B) Other scientists believe that the asteroids are material that never came together to form a planet in the first place.
The latest thinking on this subject is as follows: Not all small and sundry asteroids can be stopped from hitting the earth. Those asteroids whose paths and trajectory are fairly known along with their periodicity can be nudged from a collision course to earth by sending a rocket or spacecraft. The proximity of the rocket or spacecraft itself is expected to change the trajectory of the asteroid (in a controlled and calculated manner.) In years to come, science may come up with other additions to this basic concept to successfully deviate the asteroid from its collision course to the earth.
By regarding ideas from people that cook or chefs.
Astrobiology
Astrobiology
Astrobiology
Nothing can be done to alter the earth's trajectory (nor should it be done, as that would effect it's orbit around the sun) but several ideas have been presented to alter the course of an asteroid, or destroy it. One idea proposed by NASA is to attach thrusters to the surface of the asteroid and remotely guide the asteroid away from the earth. The more well supported idea is to simply blow it up with a nuclear ordinance carried by a Saturn V rocket. The concern with that idea is that neutron activated asteroid fragments might still enter the atmosphere and cause trouble. The key to either method would be early detection, as most asteroids move very quickly.
The lory kept repeating "I'll tell you!" to Alice regarding the ideas on how to get dry after getting soaked in the pool of tears.
Could you please provide the specific ideas you would like me to address regarding how they limited other concepts or thoughts?
Astrobiology
Astrobiology
Astrobiology
Astrobiology