The sun could kill us
Without the Sun, life as we know it would be impossible. The sun is currently the planet Earth’s biggest enemy, and it will end us. The Sun burns brighter as time passes, as it fuses hydrogen into helium. Additionally, it is expected that the sun will be about 10 percent brighter in a billion years.
The 10 percent increase might seem insignificant for some, but it will cause the water to evaporate. The sunlight will split water into hydrogen and oxygen, making it easier to evaporate.
The sun could also kill us via coronal mass ejection (CME). CME happens when a star ejects charged particles outside its corona. The CME usually doesn’t hit our planet, but it could be possible for it to burn the Earth.
Also, the Sun has pals, and they’re not very friendly either. A supernova, nova, or gamma ray burst could easily destroy the Earth’s ozone layer. If that happens, we’re literally at the mercy of the Sun’s ultraviolet radiation.
A Massive Star Is Missing From a Distant Galaxy, And No One Knows Where It Went. CLICK HERE to read more about this topic.
A meteor could strike
You probably heard of the Cretaceous-Paleogene extinction (also known as the Cretaceous–Tertiary (K–T) extinction event) that killed three-quarters of the plant and animal species on Earth, approximately 66 million years ago. The good news is that NASA has identified about 95 percent of comets and asteroids bigger than 1 kilometer in diameter, and according to scientists, in order for it an object to wipe out all life, it must be about 100 kilometers across.
However, the bad news would be that there’s that 5% that’s still unknown and there’s not so much we could do about it. Those that will manage to survive the impact, will find it impossible to find food and water, and the debris thrown into the atmosphere will definitely change our climate as it will block out the Sun’s valuable light and heat for years afterwards.
