云南现血红太阳 或由大气散射折射导致
中国云南上空星期五（3月28日）出现血红色太阳，中国科学院云南天文台专家分析，这可能由大气散射与折射导致。
深圳广电集团都市频道“第一现场”栏目报道，太阳又大又红高悬天空。目击者称，血的颜色，第一次见。
另据网传消息，血红太阳出现时间为傍晚时分，早前缅甸发生强震，云南也有震感，外界猜测血红太阳是否与地震有关。
不过，中科院云南天文台专家分析，血红太阳可能是大气散射与折射导致，当日大气中或许存在较多尘埃、水汽等颗粒物。
#云南
BY 联合早报 即时报道
Bitcoin is a decentralized digital currency that you can buy, sell and exchange directly, without an intermediary like a bank. Bitcoin’s creator, Satoshi Nakamoto, originally described the need for “an electronic payment system based on cryptographic proof instead of trust.” Each and every Bitcoin transaction that’s ever been made exists on a public ledger accessible to everyone, making transactions hard to reverse and difficult to fake. That’s by design: Core to their decentralized nature, Bitcoins aren’t backed by the government or any issuing institution, and there’s nothing to guarantee their value besides the proof baked in the heart of the system. “The reason why it’s worth money is simply because we, as people, decided it has value—same as gold,” says Anton Mozgovoy, co-founder & CEO of digital financial service company Holyheld.
Like a stock, you can buy and hold Bitcoin as an investment. You can even now do so in special retirement accounts called Bitcoin IRAs. No matter where you choose to hold your Bitcoin, people’s philosophies on how to invest it vary: Some buy and hold long term, some buy and aim to sell after a price rally, and others bet on its price decreasing. Bitcoin’s price over time has experienced big price swings, going as low as $5,165 and as high as $28,990 in 2020 alone. “I think in some places, people might be using Bitcoin to pay for things, but the truth is that it’s an asset that looks like it’s going to be increasing in value relatively quickly for some time,” Marquez says. “So why would you sell something that’s going to be worth so much more next year than it is today? The majority of people that hold it are long-term investors.”
联合早报 即时报道 from us