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Continue Learning about Astronomy

What does a grante rock look like?

what does the granite rock look like


Is the sun a medium sized star?

We used to think that the Sun was pretty average, as stars go, but recent researches indicate that there may be more - MANY more! - of the tiny red dwarf and brown dwarf stars than previously thought. Adding so many more tiny stars will skew the average lower, and it begins to look like the Sun may be more in the "above average" category. But yes, essentially the Sun is a medium or "medium large" star.


What do real diamonds look like?

Uncut unshaped diamonds look like shiny black coal


What does the constellations Leo look like?

like a lion


What would the sky look like if Earth orbited a brown dwarf?

An Earth orbiting a brown dwarf in the habitable zone would be tidally locked to the star. So, on the side of the Earth permanently facing away from the brown dwarf the sky would be black, with only the stars or other planets shining down. For the other side of the planet, the one permanently facing the star:- If it orbited one of the younger and hotter brown dwarfs, late M-spectral class to early L-spectral class, the Earth's sky would probably appear white with reddish-pink clouds and the brown dwarf star would look much like the Sun, dazzling white, but a lot bigger. The cooler the Brown dwarf star gets, the bigger and yellowier, orangier and then redder the star would appear in the sky. The sky and clouds would also become redder and darker until the clouds and then the sky are dark.Cooler thanaround the mid L-spectral class,sodium and potassiumin the star's atmospherecouldgive the star a faint reddish-purple hue because these elements are absorbing most of the star's emitted green light leaving a mixture of blue and red light. By mid T-spectral class the star is giving off such a small proportion of blue light that the brown dwarf loses its magenta hue and appears redwith the sky behind it now almost black. The heat on an inhabitable Earth orbiting around the coldest brown dwarfs would come from inside the planet itself, perhaps generated by tidal interaction with the star but almost no heat coming from the star's light. Therefore the sky from an Earth around the coldest brown dwarf would be much like the sky as seen from a rogue planet wandering through space by itself, without a sun. With the very coldest brown dwarfs, Y-spectral class, even the brown dwarf star itself would be invisible in the Earth's sky. It would be nothing but a big black disc obscuring some of the stars in an otherwise black sky.