Our sun isn't massive enough to trigger a stellar explosion, called a supernova, when it dies, and it will never become a black hole either. In order to create a supernova, a star needs about 10 times the mass of our sun.
In about 5 billion years, the Sun is due to turn into a red giant. The core of the star will shrink, but its outer layers will expand out to the orbit of Mars, engulfing our planet in the process. If it's even still there. One thing is certain: By that time, we won't be around.
A: Roughly 5 billion years from now, the Sun will exhaust the hydrogen fuel in its core and start burning helium, forcing its transition into a red giant star. During this shift, its atmosphere will expand out to somewhere around 1 astronomical unit — the current average Earth-Sun distance.
It will reach ~300 million km in diameter, engulfing Mercury, Venus, and possibly Earth, too. But the Sun achieves true enormity upon completing its red giant phase.
It still has about 5,000,000,000—five billion—years to go. When those five billion years are up, the Sun will become a red giant.
In a few billion years, the sun will become a red giant so large that it will engulf our planet. But the Earth will become uninhabitable much sooner than that. After about a billion years the sun will become hot enough to boil our oceans.
Scientists predict the Sun is a little less than halfway through its lifetime and will last another 5 billion years or so before it becomes a white dwarf.
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 dangerous supernova candidates in our cosmic backyard, so there's no reason to worry.
Just as our planet existed for over 4 billion years before humans appeared, it will last for another 4 billion to 5 billion years, long after it becomes uninhabitable for humans.
The explosion would be so powerful that planets such as Mercury, Venus, Earth, and Mars would be completely destroyed. However, all living things on Earth would die before the explosion's light, debris, or shockwaves would reach us.
Scientists are still debating whether or not our planet will be engulfed, or whether it will orbit dangerously close to the red giant sun. Either way, life as we know it on Earth will cease to exist. In fact, surface life on our planet will likely be wiped out long before the sun turns into a red giant.
In Earth's early history, a day was 23.5 hours and a year lasted 372 days | CNN.
While the sun may have 5 billion years left before it runs out of fuel, life on Earth will likely be wiped out long before that happens. That's because the sun is actually already growing brighter.
Unfortunately, supernovae visible to the naked eye are rare. One occurs in our galaxy every few hundred years, so there is no guarantee you will ever see one in our galaxy in your lifetime.
Our sun isn't massive enough to trigger a stellar explosion, called a supernova, when it dies, and it will never become a black hole either. In order to create a supernova, a star needs about 10 times the mass of our sun.
Explosions would vaporize the surface of the planet facing the sun. The other side would hit temperatures 15 times hotter than the surface of the sun right now. The entire planet would probably disintegrate in a few days.
There will be "far worse extreme weather events than those we see today. withering droughts, epic floods, deadly hurricanes, and almost inconceivably hot heatwaves; a typical summer day in midlatitude regions like the U.S. will resemble the hottest day we have thus far ever seen." Dr.
According to a US report, the sea level will increase by 2050. Due to which many cities and islands situated on the shores of the sea will get absorbed in the water. By 2050, 50% of jobs will also be lost because robots will be doing most of the work at that time. Let us tell you that 2050 will be a challenge to death.
Bottom line: What's a safe distance from a supernova? To survive a supernova, recent data indicates Earth would have to be at least 160 light-years away from the exploding star.
Supernovas are created during the last moments of a star's life. These gigantic explosions can wipe out galaxies and the planets inside them. Should we be concerned about one being too close to our Solar System?
There is no way for life to survive on the surface of a planet witnessing a supernova. As shown above, a habitable planet orbiting Betelgeuse will lose at least 4 km of its surface, vaporized to space.
Answer: Time = Distance/speed so Time = 149,000,000 km/ 28,000 = 5321 hours or 222 days.
In this way the Sun consumes about 5 billion kilograms (5 million tons) of its nuclear hydrogen fuel every second. Yet the Sun is so large that it has been burning hydrogen at this rate ever since it formed some 5 billion years ago, and it will continue to burn steadily for at least another 4 billion years.
The Sun survives by burning hydrogen atoms into helium atoms in its core. In fact, it burns through 600 million tons of hydrogen every second. And as the Sun's core becomes saturated with this helium, it shrinks, causing nuclear fusion reactions to speed up - which means that the Sun spits out more energy.