Discover the Hertzsprung-Russell diagram, a key tool graphing the brightness of stars against color in astronomy. That's really funny, and I wish I had thought of it. The vertical axis is fame, as ...

Planets accompany most sun-like stars. The orbits of many are sufficiently close that they will be engulfed when their host stars ascend the giant branch. This Letter compares the power generated by ...

We have determined accurate MK types for 26 of the brightest stars in the field of NGC 6231. We found one emission-line star with a weak shell, one star with in strong (already known), four stars with ...

IT has been suggested several times 1 that the flare activity observed in flash and U V Ceti stars is of a nature similar to that of solar flares. In this communication I shall adhere to this point of ...