Tag Archives: earth

When Will the Sun Expand and Engulf the Earth?

Question: When will the temperature be unbearable here on Earth due to the Sun’s increasing size?  — Charlie Answer: Our Sun will eventually evolve into a Red Giant star, when its surface will extend beyond the orbit of Earth.  This … Continue reading

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Do the Stars Seem to Move in the Night Sky Because of the Earth’s Rotation?

Question: Do stars seem to move in the night sky because of the Earth’s rotation?  — Selena Answer: Exactly.  As the Earth rotates on its axis it makes it look like the stars are moving through the night sky.  Also, … Continue reading

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How Many Earths Can Fit in the Volume of the Milky Way?

Question: How many earths can fit in one galaxy and if the earth were about the size of galaxy how many planets, moons, etc. would be able to fit on earth.  — Xondra Answer: To answer this question you need … 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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Identifying Strange Sounds Received by a Radio

Question: I received a radio wave with my homemade antenna that it sounds like a motorbike, like a Harley Davidson. Which type of signal it could be? it could be about the sun or the earth magnetosphere? It’s for a … 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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Can Tornados Happen in Space?

Question:  Can tornados happen in space? Maybe solar winds can act like earth winds with currents and temperature changes?  — Jay Answer:  Although the interstellar medium within galaxies, or the gas and dust between stars (including the solar wind) can … Continue reading

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Past and Future Solar Eclipses

Question:  I am interested in knowing how many solar eclipses have ever occurred in the past, and are likely to ever occur in the future based on widely accepted astronomical models.  Can you also provide dates for these events?  Thank … Continue reading

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Why is the Earth’s Orbit Around the Sun Elliptical?

Question:  Why is the Earth’s revolution around the sun elliptical rather than a perfect circle? I feel like if there is the same amount of inertia and gravity acting on the Earth at all times, the revolution would end up … Continue reading

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The Earth-Moon Spin-Orbit Resonance

Question:  For being a chunk of Earth’s primordial matter the Moon is quite an amazing stellar feat…it orbits synchronously about the earth with an axis spin velocity 1/100 that of Earth and counterclockwise orbit equal in period as that of … Continue reading

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