The more scientists learn about the universe, the more questions are raised, which can be slightly annoying...
exo-planet
“It was a special moment, crossing an important threshold in exoplanet sciences”
The scientists, though, don't know right now whether the planet has an atmosphere, a vital clue when looking for potential life
An international team of astronomers led by Cornell's Lisa Kaltenegger has characterized the first potentially habitable world outside of our own solar system