What Does Stars Look Like - Stars form in large clouds of gas and dust called molecular clouds. Web stars range in size from neutron stars, which vary anywhere from 20 to 40 km (25 mi) in diameter, to supergiants like betelgeuse in the orion constellation, which has a diameter about 640 times that of the sun with a much lower density. The colors of stars, explained. Every star has its own life cycle, ranging from a few million to trillions of years, and its properties change as it ages. From dim red to brilliant blue, stellar colors span the spectrum—and reveal how much any star brings the heat.
The colors of stars, explained. Every star has its own life cycle, ranging from a few million to trillions of years, and its properties change as it ages. Stars form in large clouds of gas and dust called molecular clouds. Web stars range in size from neutron stars, which vary anywhere from 20 to 40 km (25 mi) in diameter, to supergiants like betelgeuse in the orion constellation, which has a diameter about 640 times that of the sun with a much lower density. From dim red to brilliant blue, stellar colors span the spectrum—and reveal how much any star brings the heat.