The idea is to gain valuable near-term flight experience before attempting a moon landing with astronauts on board. With Artemis III under its belt, NASA hopes to launch two moon landing missions in 2028, Artemis IV and V, using one or both landers, and to continue with one moonshot per year thereafter.
The uncrewed Falcon 9 launched from the Kennedy Space Center on Wednesday.
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What is the difference between Blockchain and a Database?Generally a database is a collection of data which can be stored and organized using a database management system. The people who have access to the database can view or edit the information stored there. The client-server network architecture is used to implement databases. whereas a blockchain is a growing list of records, called blocks, stored in a distributed system. Each block contains a cryptographic hash of the previous block, timestamp and transaction information. Modification of data is not allowed due to the design of the blockchain. The technology allows decentralized control and eliminates risks of data modification by other parties.，更多细节参见91视频
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