Blog

By Kirchhoff’s second law a low-density gas excited to emit light will do so at specific wavelengths and thus produce

Match the planets to their pictures. [Image 1] [Image 2] [Image 3] [Image 4] [Image 5] [Image 6] [Image 7] [Image 8]  

Match the images of models of the Earth, Sun, Moon, planets, and stars with the historical astronomer who developed that model.  [Image 1] [Image 2] [Image 3]  

According to the giant impact hypothesis, how did the Moon form?

Which world did Spirit and Opportunity explore?

The Hubble tuning fork diagram for galaxies is useful because it

When Galileo pointed his telescope at the milky band of light we see in the night sky he saw that it is

Match the following objects to their descriptions.

What are objects of high redshift that look like stars but are extragalactic and highly luminous?

The figure below shows an example of a __________ drainage network.