![](https://cdn.mos.cms.futurecdn.net/YZLJC8QZLYuurokKJ75r83-1200-80.jpg)
25 years of exoplanet hunting hasn't revealed Earth 2.0 — but is that what we're looking for?
When Space.com opened its doors to the world on July 20, 1999, humanity knew about fewer than 30 exoplanets. Today, as you read this article, that number shoots well beyond 5,000. If you'd believe it, the first worlds beyond our own were confirmed …