Which tools do astronomers use to determine the effects of collisions between galaxies select the two correct answers solar system models print encyclopedia entries space telescopes computer simulation

Answer 1

Astronomers use the following tools to determine the effects of collisions between galaxies:

1. Space telescopes - These allow astronomers to observe galaxies and their interactions from outside Earth's atmosphere, providing detailed images and data.

2. Computer simulations - These enable astronomers to model and predict the outcomes of galaxy collisions by simulating gravitational interactions and other physical processes involved.

So the correct answers are space telescopes and computer simulation.