The starship Enterprise is passing the planet Vondor when it is discovered that a Klingon spy has planted a bomb on board the ship. Mr. Spock has determined that the bomb will explode in one day (in the ship's frame). It can be defused only by the galaxy's leading bomb expert, who is at Star Base 23. Star Base 23 is at rest relative to Vondor, and a distance of seven light days away from Vondor. (A light day is the distance traveled by light in one day.) Captain Kirk orders the ship to head towards Star Base 23 at maximum speed. Scotty is repairing the warp drive engines, so only the impulse engines (maximum speed 0.99c) are working. The ship already is moving towards Star Base 23 at a speed of 0.99c, so it just continues with that constant velocity. Will the Enterprise make it to Star Base 23 before the bomb explodes? (a) Show why or why not as explained in the ship's frame. (b) Show why or why not the ship will make it as explained in the reference frame of Star Base 23.

For an astronaut traveling to a star 10 lightyears away at v=0.99c  and returning, spending negligible amount of time at the destination, describe the journey as the astronaut would observe it. In particular, describe what the astronaut would observe as happening on Earth during the journey

Two twins leave Earth at the same time in two different space ships. Jeremy travels twice as fast as Marnie. What will happen to them after they travel for one year of time back on Earth?

Question 8 The star Betelgeuse is about 520 light-years away, If the speed of light were twice its present value, how far away would Betelgeuse be? O 2080 ly O 560 ly O 260 ly O 1040 ly O 130 ly Question 9 Which of the following is the reason for an ocean of water under Europa's frozen surface? O Europa had many icy comets crash into the surface bring water to the moon and melting the water as it fell into the core. O Furopa formed with an unusual amount of liquid water in the core and the coldness of space wasn't able to freeze it. O upiter's strong gravitational force is causing Europa to flex in its orbit, leading to an increase in internal heating. O Europa's close proximity to Jupiter puts it into a gravitational tug-of-war with Jupiter's targest moon Ganymede. Question 10 How was Neptune discovered? O When a large comet broke up and hit the planet, the explosion was seen from Earth-based telescopes O From a large sky survey that identified the "blue-green" planet. O By watching…