Update Block Explorer List to include Ethernow .md

Adding Ethernow.xyz to the list of explorers available to the ecosystem.

Author: aseoconnor

src/content/developers/docs/data-and-analytics/block-explorers/index.md

@@ -14,6 +14,7 @@ You should understand the basic concepts of Ethereum so you can make sense of th
 ## Services {#services}
 
 - [Etherscan](https://etherscan.io/) -_Also available in Chinese, Korean, Russian, and Japanese_
+- [Ethernow](https://www.ethernow.xyz/)
 - [Beaconcha.in](https://beaconcha.in/)
 - [Blockchair](https://blockchair.com/ethereum) -_Also available in Spanish, French, Italian, Dutch, Portuguese, Russian, Chinese, and Farsi_
 - [Blockscout](https://blockscout.com/)
@@ -232,6 +233,7 @@ The consensus layer top-level data includes the following:
 ## Block explorers {#block-explorers}
 
 - [Etherscan](https://etherscan.io/) - a block explorer you can use to fetch data for Ethereum Mainnet and Goerli Testnet
+- [Ethernow](https://www.ethernow.xyz/) - a real-time transaction explorer that enables you to see the Ethereum Mainnet pre-chain layer
 - [Beaconcha.in](https://beaconcha.in/) - an open source block explorer for Ethereum Mainnet and Goerli Testnet
 - [Blockchair](https://blockchair.com/ethereum) - the most private Ethereum explorer. Also for sorting and filtering (mempool) data
 - [Etherchain](https://www.etherchain.org/) - a block explorer for the Ethereum Mainnet