# Using Big Dipper
For exploring the testnets, you can use big-dipper instances:
- gaia-flex: https://bigdipper.gaia-flex.cosmwasm.com (opens new window)
- coralnet: https://bigdipper.coralnet.cosmwasm.com (opens new window)
Big-dipper provides almost complete ux for exploring the chain. Suit your self and take a look around the website. I am sure it will fulfull your needs.
# Sending Transactions Using Big Dipper
At the moment Big Dipper only supports ledger transaction signing.
- First plug your ledger and open cosmos app.
- Press sign.
- Check and verify on ledger.
- Transaction will be broadcasted and hash will be prompted. You see the tx by clicking first link.