Why do astronomers find it difficult to locate extrasolar planets with telescopes

Compare the depth of field when focusing with low power and high power. which power has the greater depth of field?

Asap what occurs after cytokinesis is completed at the end of meiosis 1?

Need an answer asap 45 points and brainlest to the first person to answer why do scientific theories, such as biological and chemical evolution, represent the strongest explanation of the changes observed in the fossil record. must be in sentence form how can scientific theories on evolution and the fossil record change over time? must be in sentence form