Question: Are the planets orbiting the sun at the same speed as the sun revolves on its axis? Or…
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How Can Gas Particles Stick Together to Ultimately Form Stars and Planets?
Question: There is a lot of acceptance that when the gases of the universe began to join and spin…
What Are Those Two Bright Lights on the Western Horizon?
Question: On July 15, 2015, observing from Las Vegas, Nevada, there are 2 objects (Low) in the Western sky….
What is that Bright Object in the Western Sky After Sunset?
Question: What bright light is in nepa’s sw sky at 30degrees above the horizion at 9:15 edt. — Tom…
Why Can’t Venus be Fully Lit by the Sun in the Ptolemaic System?
Question: The first known observations of the full planetary phases of Venus were by Galileo at the end of…
What Can Radio Telescopes Measure?
Question: I have some questions about radio astronomy. If we build a planetary radio telescope, What data can we…