LOS ANGELES, Jan. 17 (Xinhua/APP):Researchers at the California Institute of Technology (Caltech) have discovered a rare asteroid orbiting snugly within the inner confines of the solar system, according to a Caltech release on Wednesday. The asteroid has been discovered by Caltech’s Zwicky Transient Facility (ZTF), a survey camera based at Palomar Observatory. The newfound … Continue reading U.S. researchers find first asteroid inside Venus orbit