🦁 טלסקופ ווב צילם "אריה" ענק בחלל, וכוכב גוסס הוא זה שפיסל אותו

Last week, NASA and the European Space Agency released an amazing new picture taken by the James Webb Space Telescope. It shows a huge cloud of gas and dust in space nicknamed the "Lion Nebula," officially called NGC 2392. The cloud is about 5,000 light-years from Earth, in the constellation Gemini. It got its nickname because in the picture, it really does look like a lion's face, with a fuzzy "mane" of dust around it. The most amazing part is how this cloud was made. At its center is a tiny, super-hot star called a white dwarf. This is what's left of a star like our Sun after it reaches the end of its life. When a star like this gets old, it can no longer make enough energy to stay stable, so it starts pushing its outer layers off into space, layer by layer, like peeling an onion. The hot white dwarf left behind sends out huge amounts of radiation, which shapes the gas and dust around it into that lion-face pattern, with darker and lighter areas forming the "mane." Clouds like this are called "planetary nebulae," even though they have nothing to do with planets at all. The name was actually a mistake from hundreds of years ago, when old telescopes made these clouds look round and blurry, like a planet. Webb is the most powerful space telescope ever built, and its special infrared cameras can photograph details in this cloud that no telescope has ever captured before. Scientists think the cloud will keep slowly spreading out for about another 10,000 years before it disappears completely. This story is exciting because it also teaches us about the far future of our own Sun. In a few billion years, our Sun will go through something similar and become a small white dwarf too, wrapped in its own cloud of gas and dust.