|Brown Dwarf (def.): Any star with a radius comparable to, or smaller than that of the Sun (including the Sun itself).
Field Guide to Miscellaneous Sources
Chandra Images: Miscellaneous Objects
Q: How long might a white dwarf exist before becoming a brown dwarf?
Q: The Chandra Deep Field images, North and South, show objects as they appeared billions of years ago. If we had a magical correspondent in one of those distant galaxies, they would tell us that things are very different now, than in our recent photos. However, could one in the North Field see the ones in South Field?
Q: I have never heard of any one mentioning gamma rays. Do gamma rays exist in space?
Q: When a brown dwarf has cooled to a black dwarf, is the black dwarf still gaseous or is it a solid now that it's cold?
Q: If X-rays are produced by a high-speed collision between an electron and a proton and X-rays are observed to emanate from the cores of galaxies (among other places) why can't we speculate upon a proton star in the center? Why does theory predict that a black hole is accelerating matter that emits X-rays instead of a Protonic star whose electromagnetic strength is attracting electrons that in turn emit the X-rays?
Q: How can you be sure of TWA 5B's mass and its distance from the central star? Can its orbital speed be measured in some way?
Q: Can you tell me how to access data on the GRB sightings?
Q: I though that Wolf-Rayet stars were very massive stars that would eventually explode as supernovas. How can they also be the progenitors of White Dwarfs which have a maximum mass limit of 1.4 solar masses?
Q: What are the chances that the brown dwarf "solar flare" was, instead, an impact by another object similar to the comet that struck Jupiter, creating a massive explosion and not a flare?
Q: Is it possible that the brown dwarf is not a Sun but rather a planet in the last of cooling stage from its coalition as a ball?
Q: In your latest article about brown stars, you said that "brown dwarfs inhabited the 'undiscovered country' between stars and planets". So would this mean that they could have satellites of some sort, or even small planets?
Q: Is there such a thing as a red dwarf? If so, how is it different from a white or brown dwarf?