Category Archives: Physics

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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What Lies Beyond the Known Universe?

Question: Do dimensions really exists? [Also,] are the black holes really or possibly portals leading to different dimensions (like a whole new universe or a totally different universe)?  [Also,] right now I read in the blog about like the diameter … Continue reading

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Does the Sun’s Rotational Axis Precess?

Question: The earth has the north celestial pole position today near Polaris and has a 25000 year cycle circle.  What is the same for the SUN’s north celestial pole and wobble?  – David Answer: The precession of the Earth’s rotational … Continue reading

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What Equipment Does One Need to Send a Radio Signal to a Distant Star?

Question: Hi. I’m doing some research for a piece of fiction and was wondering: if you had a radio transmitter/receiver aimed at a far star 1) what kind of equipment would one need and 2) how would the equipment’s behaviour … Continue reading

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What Causes the Earth’s Magnetic Field?

Question: Earth acts like a magnetic field that we all know. But firstly, the question which comes in our mind is what is the source of this magnetic field. After reading various articles and from sites about this, I got … Continue reading

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Do Radio Sources “Twinkle”?

Question: Usually observations with radio telescopes are not affected by rain, clouds etc. but recently i heard scintillation effects can affect observations with radio telescopes. I want to know why it is affected by that. – Anjali Answer: Radio observations … 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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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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Do Gravitational Waves Need a Medium to Travel Through?

Question: Do gravitational waves need a medium to travel. Do they slow down when passing through a medium?  – Michael Answer: Gravitational waves are best described as distortions in the fabric of space that are due to objects with mass.  … Continue reading

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