Question

a new planet has been discovered, _____, fill question tag.​

Answer 1

Answer:

HASN'T IT

I GUESS THIS IS CORRECT ONE...

Answer 2

Answer:

Scientists claim the exoplanet, if confirmed, could be a "prime candidate to host alien life". On 18 April 2013, NASA announced the discovery of three new Earth-like exoplanets – Kepler-62e, Kepler-62f, and Kepler-69c (now confirmed) – in the habitable zones of their respective host stars, Kepler-62 and Kepler-69.

Explanation:

please like my answer