Category: earth-sized

NASA’s TESS spacecraft finds its first Earth-sized exoplanet

[ad_1] This newly identified planet is the smallest world outside our solar system that TESS has spotted. And the spacecraft’s data shows HD21749c circles its star every 7.8 days, meaning it has a tight orbit that would lead to surface temperatures of up to 800 degrees Fahrenheit. TESS has now found 10 planets smaller than […]