ET White Paper: To Find the First Earth 2.0

Understand

We propose to develop a wide-field and ultra-high-precision photometric survey mission, temporarily named "Earth 2.0 (ET)".

• This mission is designed to measure, for the first time, the occurrence rate and the orbital distributions of Earth-sized planets.
• ET consists of seven 30cm telescopes, to be launched to the Earth-Sun's L2 point.
• Six of these are transit telescopes with a field of view of 500 square degrees.