Celestia

Celestia is a data availability network that rollups can use instead of posting data to Ethereum.Celestia 是一个数据可用性网络，rollup 可以使用它来代替向以太坊发布数据。

By outsourcing data availability to Celestia, rollups can reduce their operating costs by an order of magnitude.通过将数据可用性外包给 Celestia，rollup 可以将其运营成本降低一个数量级。