Astronomy Weekly Newsletter

Astronomy newsletter

Top new questions this week:

How often does the supermassive black hole in the Milky Way become a quasar?

My current interest is black holes and quasars. I was wondering how often they erupt--specifically ours? Would it be blindingly bright on Earth? Finally, would there be any effects that would alter ...

supermassive-black-hole quasars  
asked by Scott 4 votes
answered by Jake Soleri 1 vote

If Alpha Centauri A's solar system exactly mirrored our own, what would we be able to detect?

Suppose there was an exact replica of our solar system 4.4 ly away (people included). What would we be able to detect and with what telescope(s)? Which planets? Could we detect radio transmissions ...

asked by Nick T 3 votes
answered by Rob Jeffries 3 votes

What's special about Saturn that it has distinctive rings?

This may overlap with other questions, but I'm asking what is unique about Saturn in location, properties, etc that is has far more pronounced rings? It's between Jupiter and Uranus and Neptune in ...

formation saturn planetary-ring planetary-formation  
asked by ThePopMachine 2 votes
answered by Ashley James 0 votes

Where does the dust on 67P/Churyumov-Gerasimenko come from?

As we (laymen) are told, comets lose gas and dust when they descent into the denser regions of the solar system. Seemingly so much and so large parts that they can even cause meteor showers like in ...

comets dust 67p  
asked by Vroomfondel 2 votes
answered by Rory Alsop 1 vote

Why don't we orbit the center of our galaxy?

At the center of the milky way, there must be some giant mass that keeps the galaxy from just floating away from itself. So, obviously, we feel the immense gravitational pull of whatever this is. But, ...

asked by user5400 1 vote
answered by LocalFluff 0 votes

The tidal locking problem concerning Earth sized planets in habital zone around Red Dwarfs

Would twin planets orbiting around each-other present a solution to tidal locking of habitable planets in Red Dwarf systems. It's an awfully easy equation to set up....oh ok I'm fibbing I can't do it. ...

asked by C hibbs 1 vote

Is there any planet/star bigger than VY Canis Majoris?

Compared to the VY Canis Majoris , our Sun is more like a speck of space dust . Is there any planet or star , which is known to us, bigger than the VY CM ?

asked by Ero Sennin 1 vote
answered by David Hammen 4 votes

Greatest hits from previous weeks:

How do we know that the speed of the influence of gravity is instant?

When I was in college, I posed to my astronomy professor a thought experiment that had been puzzling my mind for some time: "If the sun magically disappeared, instantly, along with all its influences, ...

asked by Supuhstar 11 votes
answered by Stan Liou 12 votes

What scientific evidence is there to support or refute the Iron Sun Hypothesis?

Professor Oliver Manuel, a professor of nuclear chemistry at the University of Missouri-Rolla, claims in the article Sun Is Made Of Iron, Not Hydrogen, Professor Says that iron, not hydrogen, is ...

asked by Sabre Tooth 5 votes
answered by Dikran Marsupial 12 votes

Can you answer this?

How do I deduce my latitude and longitude from N obervations of occultations from the same place?

I think it would be an interesting exercise to measure the latiude and longitude of my house using N occultation timings. I would like to see how precisely I can measure it using that technique, and ...

moon amateur-observing  
asked by John O 1 vote
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