What Will Happen as the Sun Dies
In about five billion years, scientists estimate, the Earth will be engulfed and burned up in the expanding radius of the Sun as it evolves into its slightly cooler but much larger phase.
What's the Latest Development?
What with the sun acting up lately, firing a massive wave of radioactive plasma right at us, you would be forgiven for thinking Earth might be in real danger. Thankfully, it is not. Assuming we can outlast climate change, an asteroid strike or some absurd nuclear disaster, we will be on good terms with the sun for another five billion years, scientists estimate. After that, as the sun evolves into a red giant and prepares for its slow death, the Earth will be engulfed by its expanding radius.
What's the Big Idea?
As the sun dies, its expanding radius will swallow Mercury and Venus about one million years before it reaches Earth, leaving only some of the outer planets to survive. So is there any chance that Earth will escape its fate? "Some have conjectured that it could be possible to engineer a way to expand Earth's orbit by the small percentage needed to escape. It would involve arranging 'a suitable encounter of the Earth every 6,000 years or so with a body of large asteroidal mass,' perhaps objects in the Kuiper Belt."
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Giving our solar system a "slap in the face"
- A stream of galactic debris is hurtling at us, pulling dark matter along with it
- It's traveling so quickly it's been described as a hurricane of dark matter
- Scientists are excited to set their particle detectors at the onslffaught
Two massive clouds of dust in orbit around the Earth have been discussed for years and finally proven to exist.
- Hungarian astronomers have proven the existence of two "pseudo-satellites" in orbit around the earth.
- These dust clouds were first discovered in the sixties, but are so difficult to spot that scientists have debated their existence since then.
- The findings may be used to decide where to put satellites in the future and will have to be considered when interplanetary space missions are undertaken.
Once again, our circadian rhythm points the way.
- Seven individuals were locked inside a windowless, internetless room for 37 days.
- While at rest, they burned 130 more calories at 5 p.m. than at 5 a.m.
- Morning time again shown not to be the best time to eat.
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