1. Astronot di luar angkasa tetap melihat langit gelap, meskipun tidak ada atmosferβkarena ruang itu sendiri gelap, bukan karena awan atau langit malam.
2. Jika mata manusia bisa melihat gelombang mikro, maka langit malam akan terlihat dipenuhi titik-titik cahaya dan pola misterius.
3. Background CosmicMicrowave Radiation adalah sisa cahaya dari Big Bang yang kini menjadi sinyal gelombang mikro yang sangat lemah dan tersebar di seluruh alam semesta. Itu adalah βcahaya paling kunoβ yang masih bisa dideteksi.
1. Astronot di luar angkasa tetap melihat langit gelap, meskipun tidak ada atmosferβkarena ruang itu sendiri gelap, bukan karena awan atau langit malam.
2. Jika mata manusia bisa melihat gelombang mikro, maka langit malam akan terlihat dipenuhi titik-titik cahaya dan pola misterius.
3. Background CosmicMicrowave Radiation adalah sisa cahaya dari Big Bang yang kini menjadi sinyal gelombang mikro yang sangat lemah dan tersebar di seluruh alam semesta. Itu adalah βcahaya paling kunoβ yang masih bisa dideteksi.
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Bitcoin is built on a distributed digital record called a blockchain. As the name implies, blockchain is a linked body of data, made up of units called blocks that contain information about each and every transaction, including date and time, total value, buyer and seller, and a unique identifying code for each exchange. Entries are strung together in chronological order, creating a digital chain of blocks. βOnce a block is added to the blockchain, it becomes accessible to anyone who wishes to view it, acting as a public ledger of cryptocurrency transactions,β says Stacey Harris, consultant for Pelicoin, a network of cryptocurrency ATMs. Blockchain is decentralized, which means itβs not controlled by any one organization. βItβs like a Google Doc that anyone can work on,β says Buchi Okoro, CEO and co-founder of African cryptocurrency exchange Quidax. βNobody owns it, but anyone who has a link can contribute to it. And as different people update it, your copy also gets updated.β
Should You Buy Bitcoin?
In general, many financial experts support their clientsβ desire to buy cryptocurrency, but they donβt recommend it unless clients express interest. βThe biggest concern for us is if someone wants to invest in crypto and the investment they choose doesnβt do well, and then all of a sudden they canβt send their kids to college,β says Ian Harvey, a certified financial planner (CFP) in New York City. βThen it wasnβt worth the risk.β The speculative nature of cryptocurrency leads some planners to recommend it for clientsβ βsideβ investments. βSome call it a Vegas account,β says Scott Hammel, a CFP in Dallas. βLetβs keep this away from our real long-term perspective, make sure it doesnβt become too large a portion of your portfolio.β In a very real sense, Bitcoin is like a single stock, and advisors wouldnβt recommend putting a sizable part of your portfolio into any one company. At most, planners suggest putting no more than 1% to 10% into Bitcoin if youβre passionate about it. βIf it was one stock, you would never allocate any significant portion of your portfolio to it,β Hammel says.
