Author Archives: Jeff Mangum

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 because of the impact of those collisions. That would mean that all particles hit in the same direction, like using your … Continue reading

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Can Time Dilation Near a Black Hole Explain the Orbits of Stars Near the Black Hole?

Question: Regarding galaxy rotation.  Although the supermassive black hole at the center of a Galaxy probably isn’t strong enough to speed up the rotation of its more distant stars so as to make the velocity curve level, nevertheless the time-dilation … Continue reading

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Orientation of the NRAO 140 Foot Telescope Axis

Question: I was at the NRAO two days ago. Magnificent!  But in walking by the 140′ scope (by “Neptune”) it looked as though there was a mistake in the labeling on the informational sign.  On the diagram that explains how … Continue reading

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What Would a Neutron Star Look Like to the Human Eye When Viewed from 10 Light Years Away?

Question: What would a neutron star look like to the human eye from, say, 10 light years?  – Lee Answer: Neutron stars emit most of their thermal radiation at x-ray wavelengths, and emit very little radiation (i.e. “light”) at optical … Continue reading

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Is There a Period When the Radio Transmission Environment in the NRQZ is “Quieter”?

Question: I know the NRAO is located in a “radio quiet zone.”  Is there a time during the 24 hour day that is “quietest” for you there?  A time you would choose to listen for your weakest signals?   If there … Continue reading

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Questions About a Career in Astronomy

Question: Though I have taken physics chemistry and biology but not maths in my high school but recently i have Developed quite an interest in astronomy and I want to pursue my career in this field so is there any … Continue reading

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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. One is bright the other dim. Are they Venus and Jupiter?  – George Answer: Yes!  Venus, the brighter of the two, … Continue reading

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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 Answer: Although I don’t exactly know what location you are observing from, I suspect that you are seeing Jupiter and Venus, … Continue reading

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What Happens to Very Small Stars Like OGLE-TR-122b as They Get Older?

Question: I know what happens when a massive star collapses, but what will happen when OGLE-TR-122b collapses? Will it even collapses? Or will it go through a different process?  – Maya Answer: As the article that you forwarded indicates, OGLE-TR-122b … Continue reading

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What Happens to a Black Hole That Radiates to “Nothing”?

Question: Just to clarify, Hawking’s radiations takes place simultaneously to the black hole growing? and, then becomes dominant once the black hole stops growing?  Further, having depleted with a final outburst/explosion leaving behind ” nothing ” – to what level … Continue reading

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