العلماء يلتقطون صور لكويكب غريب على شكل (عظمة كلب)
هو بقايا اصطدام عنيف بين كويكبين لم يتحطموا ويتفرقوا تماما ويدور هذا الكويكب بين مدار المريخ والمشتري على بعد 200 مليون كم عن الأرض ما يعني أن حجمه الظاهري في السماء يعادل مشاهدة كرة غولف على بعد 40 كم .
BY علم الفلك والفضاء (Physics)🌺
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.
In recent times, Telegram has gained a lot of popularity because of the controversy over WhatsApp’s new privacy policy. In January 2021, Telegram was the most downloaded app worldwide and crossed 500 million monthly active users. And with so many active users on the app, people might get messages in bulk from a group or a channel that can be a little irritating. So to get rid of the same, you can mute groups, chats, and channels on Telegram just like WhatsApp. You can mute notifications for one hour, eight hours, or two days, or you can disable notifications forever.
علم الفلك والفضاء Physics from us