What would happen if there was a supernova in our galaxy? If a supernova explosion were to occur within about 25 light-years of Earth, our planet would probably lose its atmosphere, and all life would perish. However, astronomers haven’t found any...
What will happen to the Earth when the Sun becomes a red giant? As our star ends its life, it will swell far beyond its current size, and as it does so, it will transition into a Red Giant. During this...
Will the Sun become a white dwarf? So what will happen to the Sun? In some 6 billion years it will end up as a white dwarf — a small, dense remnant of a star that glows from leftover heat. The...
Will Mars be habitable when the Sun becomes a red giant? As the sun grows hotter, other planets will become more appealing. Just as Earth becomes too toasty to sustain life, Mars will reach a temperature that makes it habitable. Cornell...
What happens if the Sun becomes a red giant? When the Sun exhausts it hydrogen fuel and enters its Red Giant phase it will expand to roughly 100 times its present size. This will make the distance from the Sun to...
How long will the Suns red giant phase last? The red-giant phase typically lasts only around a billion years in total for a solar mass star, almost all of which is spent on the red-giant branch. How long till the Sun...
How long until the Sun will become a white dwarf? Stars that are comparable in mass to our Sun will become white dwarfs within 75,000 years of blowing off their envelopes. Eventually they, like our Sun, will cool down, radiating heat...
What are red giants? A red giant is a dying star in the final stages of stellar evolution. In about five billion years, our own sun will turn into a red giant, expand and engulf the inner planets — possibly even...
How big would a red giant Sun be? Red giant stars bloat to 62 million to 620 million miles in diameter (100 million to 1 billion kilometers) — 100 to 1,000 times wider than our sun is today. Will Earth survive...
How old is the Sun now in 2022? Our Sun is 4,500,000,000 years old. How many years later will the Sun die? Analyzing the data provided by the Gaia Spacecraft, scientists have concluded that the Sun will reach a maximum temperature...