O, B, A, F, G, K, and M.
The idea is that CERTAIN TYPES of stars, including certain variable stars (such as Cepheids) have a known brightness; so if you observe their apparent brightness, you can calculate their distance.
Main-sequence stars; those are stars that are in a certain area in the H-R diagram. They are also the stars which burn (fuse) hydrogen-1, converting it into helium-4.
Brittle stars have several natural predators, including fish, crabs, sea birds, and some marine mammals. They are also vulnerable to certain species of larger sea stars that may feed on them. Additionally, brittle stars may face competition for food and resources from other bottom-dwelling marine organisms.
Many things may eat coral and algae, certain types of snails, hermit crabs, blennies, and sea stars will eat different types of algae and detritus
No, not all stars have sunspots, prominences, and solar flares like our Sun. These phenomena are specific to certain types of stars, such as young, active stars that are similar to the Sun in size and age. Larger, more evolved stars may not exhibit these same features.
All stars.
Two types of stars that can form from a nebula are main sequence stars, like our sun, and giant stars, which are larger and more luminous than main sequence stars.
The four types of stars are; Main Sequence, White Swarfs, Red Giants and Super Giants. 90% of stars are in the Main Sequence.
A constellation is technically a demarcated region of the sky, not a number of stars, and the number of stars that are present in that region of sky is potentially quite high (or infinite) depending on the telescope being used.there are 18different stars in Aries
they have popular slogans and a lot of people like movie stars eat certain types of cereal
Cloud types have no meanings at all.
It has all types of stars with different ages