Recently, scientists have found a planet similar to Earth. It circles around a red dwarf star called Kepler-438. This planet, Kepler-438b, was estimated to have a 70% chance of being a rocky planet similar to ours. But the discovery of its lack of a magnetic field has rendered it completely radioactive. Kepler-438b's atmosphere was stripped away by its sun's coronal mass ejections. No air, no atmosphere, just heat. Despite this depressing discovery, we believe there is another earth-like planet in the galactic neighborhood. Hope is still there.
https://www.washingtonpost.com/news/speaking-of-science/wp/2015/11/17/the-most-earth-like-planet-we-know-about-is-probably-too-radioactive-for-life/


Watch Stephen Hawking's TED Talk about our origins and what we possibly must do to prolong the existence of the human race. https://www.ted.com/talks/stephen_hawking_asks_big_questions_about_the_universe?language=en

Keplar-22 I think was another with similar earth characteristics.

55 Cancri e its not like earth but twice size known as super earth class but inside the planet its has a third of the planet's mass would be carbon, much of which may be in the form of diamond

what if there was life there before, then everything went extinct