What Is a Black Hole? | NASA

Marble Card #115556 with a unique link to https://www.nasa.gov/audience/forstudents/k-4/stories/nasa-knows/what-is-a-black-hole-k4.html | This URL can only exist on one card. Creating Marble Cards is a way to bookmark and show appreciation for web content. It’s an Internet indexing game where you can create, battle and trade unique NFT frames of web content. The image in the circle is not part of the Marble Card NFT. It comes from the OpenGraph and is shown as a preview of the linked URL, same as when shared on social media.

Updated card details
Marble Card ID #115556
Marbled at Sunday 20th of June 2021 10:45:36 AM
Marbled from 0x51baFCe6c0E5C020CDEeB8a3eE6407C4f19Ef43E
Network matic
Collection Nasa.gov
Collection ID #1756
Level 81 81
Generation gen2
Type Basic
Gold
Remarbles 0
Image Source https://cdn.marble.cards/images/cards/185/185580/185580-share.png?version=2