Category Archives: Solar System

Proof that the Oort Cloud Exists?

Question: I’m somewhat skeptical about the existence of the Oort Cloud. Some of the estimates I’ve heard indicate that it could stretch halfway to Proxima Centauri. Unless the interstellar medium is itself far less “empty” than predicted, it would seem … Continue reading

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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 1610 (though not published until 1613). Using a telescope, Galileo was able to observe Venus going through a full set of … Continue reading

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What if the Moon Moved Randomly in its Orbit?

Question: What will happen if the moon moves randomly?  — Ahmed Answer: Since the Earth’s Moon is an important gravitational influence on the Earth, we would certainly notice if it started to move randomly.  The most noticeable effect of random … Continue reading

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What Can Radio Telescopes Measure?

Question: I have some questions about radio astronomy. If we build a planetary radio telescope, What data can we measure from the received signals other than listening to the noise of S-burst and  L-burst in a project like Radio JOVE?  … Continue reading

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What if the Sun did not turn into a Red Giant and the Moon moved out of its Orbit Around the Earth?

Question: What effects would we see on Earth if the Sun wouldn’t turn into a Red Giant? If the Moon would move away slowly until extracted from its orbit, would that, for example, affect Earth’s axis?  – Walle Answer: If … Continue reading

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Do Large Stars Possess Correspondingly Large Planets?

Question: If VY Canis Majoris has a Solar System, would the planets be star-sized and the moons planet sized?  – Monte Answer: With a mass of about 30 times that of our Sun, VY Canis Majoris is one of the … Continue reading

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Equation for Orbits?

Question: Why does the following equation seem to predict stable orbits around the sun as well as for moons around planets without any involvement of balancing centripetal and gravitational forces. The following is the equation that in my investigation seems … Continue reading

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Location of a List of Solar System Objects and Their Naming Conventions?

Question: Simple question.  What is the website address that I may gain access to the recorded bodies and there naming conventions?  — Chuck Answer: The International Astronomical Union (IAU) maintains a web site which contains all of the information regarding … Continue reading

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Star and Planet Sky Location Information

Question: Could you generate an image of the planetary alignment on September 26th,  2014?  – Branden Answer: I think that you are probably looking for night sky planet positions for a given date.  One of the best sources for this … Continue reading

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Possibility of a Settlement on Deimos and Water on Mars

Question: What is the possibility of an orbital settlement around Deimos as it would have access to the minerals of both the moon itself and the supposed water supply of Mars?  – Colin Answer: Well, settlements on other planets or … Continue reading

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