A Supernova May Have Cleaned Up Our Solar System

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Headlines:

• "Gravitational Waves Detect Merging Neutron Stars" - According to recent research, scientists have detected the merging of two neutron stars through gravitational waves, providing valuable insights into the cosmic dance of massive objects (ScienceAlert, 2017). • "Oldest Known Fossil Discovered in Western Australia" - A 3. 46-billion-year-old fossilized relic of an ancient microorganism has been discovered in Western Australia, shedding light on the origins of --- on Earth (BBC News, 2022). • "NASA's Parker Solar Probe Enters Sun's Corona" - The U. S. space agency's Parker Solar Probe has successfully entered the sun's corona, providing unprecedented data on the solar wind and its impact on the solar system (NASA, 2020). • "New Species of Ancient Human Discovered in the Philippines" - Archaeologists have unearthed fossils of an previously unknown human species... which fossils date back around 50,000 years, in the Philippines (National Geographic, 2020). • "Hubble Space Telescope Finds Most Distant Object Ever Seen" - Astronomers using the Hubble Space Telescope have spotted the most distant galaxy ever observed, offering a glimpse into the early universe (Space. com, 2021). • "Breakthrough in Carbon Capture Technology Could Mitigate Climate Change" - Researchers have developed a new method for capturing and utilizing carbon dioxide, which could potentially play a crucial role in reducing greenhouse gas emissions and combating climate change (The Guardian... 2022).

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The blast from a supernova should be enough to clear almost all the dust from the solar system, and this may have last happened 3 million years ago. But like the dust on furniture, these fine particles will gradually be replenished.

Dust we see drifting through space consists of small grains, resulting from events such as asteroid collisions. The grains are typically less than a millimetre in size, going down to just nanometres across. About 70 per cent of the solar⁘

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