NASA Video Reveals 400-Year-Old Kepler Supernova Expanding Like Blue Ocean

• NASA's Chandra X-ray Observatory released a 25-year time-lapse video (2000-2025) of the Kepler Supernova remnant.
• The video shows the debris of the star, which exploded 400 years ago, expanding rapidly like a blue ocean.
• Scientists observed varying speeds of the remnant's parts, with some moving at 13.8 million mph, influenced by dense gas.
• Kepler Supernova was a Type-Ia supernova, a 'Standard Candle' used to measure cosmic distances and universe expansion.
• Supernovae are crucial for forming heavy elements like iron, calcium, and oxygen, essential for new planets and life.

Why It Matters: NASA's time-lapse unveils the 400-year-old Kepler Supernova's ongoing expansion, vital for understanding cosmic evolution.