What do they look like? Tree swallows are small birds (about 14 cm long) with long wings and small legs and feet. They are irridescent greenish-blue on their head, shoulders and back, and white their chin, breast and belly. Tree swallows have a short black beak and dark brownish feet.
Ernest Rutherford concluded that an atom contains a very small, dense center, called a nucleus, with a positive charge as a result of his gold foil experiment.
Question and answer. The astronomer who agreed with the heliocentric theory and was imprisoned for his investigations was: Copernicus John Dalton LaMarck Galileo. The astronomer who agreed with the heliocentric theory and was imprisoned for his investigations was: GELILEO. Log in to see link for more information. Added 4/1/2015 3:53:05 AM. This answer has been confirmed as correct, not copied, and helpful.