What are the two characteristics of a white dwarf?
White dwarfs typically have a radius just . 01 times that of our own sun, but their mass is about the same. Stars like our sun fuse hydrogen in their cores into helium. White dwarfs are stars that have burned up all of the hydrogen they once used as nuclear fuel.
Which is the best description of a white dwarf star?
A white dwarf is what stars like the Sun become after they have exhausted their nuclear fuel. Near the end of its nuclear burning stage, this type of star expels most of its outer material, creating a planetary nebula. Only the hot core of the star remains.
Which is the youngest star?
Surviving a Powerful Event. In a report by Futurism, a team of astronomers observed what they believe is the youngest neutron star 170,000 light-years away from Earth in a satellite galaxy of our very own Milky Way, which is known as SN 1987A.
What color are stars?
Stars have different colors, which are indicators of temperature. The hottest stars tend to appear blue or blue-white, whereas the coolest stars are red.
Are stars yellow or white?
As a matter of fact, all stars are not yellow. They appear “yellow-white” to a human eye because of the very dark-black background of the sky. And also because in the obscurity, the human eye does not use the same detectors to see than in the day light.
What is the most important star?
“V1 is the most important star in the history of cosmology. It’s a landmark discovery that proved the universe is bigger and chock full of galaxies. I thought it would be nice for the Hubble telescope to look at this special star discovered by Hubble, the man.”
What is the brightest star we can see?
The brightest star in the sky is Sirius, also known as the “Dog Star” or, more officially, Alpha Canis Majoris, for its position in the constellation Canis Major. Sirius is a binary star dominated by a luminous main sequence star, Sirius A, with an apparent magnitude of -1.46.