Greg Leonard discovered a potentially hazardous asteroid within Earth orbit
There are tens of millions of small space rocks similar to the meteor which entered our atmosphere over Chelyabinsk to be found.
Short story about Kepler’s Planet & a small asteroid 2017 MB1
Space colonies and looking for another earth
24 hours a day, 16,600 feet above sea level in the high dry desert of northern Chile, ALMA keep working and looking for new planet.
The new suspect for future earthimpactor: Asteroid 2017 LD
Unfolding Tabby’s star and the story of 3 asteroid hunters
looking for atmosphere in earthlike and earthsize planet