Near-Earth object its mission, Rosetta was crashed into the comet′s surface in 2016. Near-Earth object A near-Earth object (NEO) is any small Solar System body whose orbit brings it to proximity with Earth. By convention, a Solar System body is a NEO if its closest approach to the Sun (perihelion) is less than 1.3 astronomical units (AU). If a NEO's orbit crosses the Earth's and the object is larger than across, it is considered a potentially hazardous object (PHO). Most known PHOs and NEOs are asteroids, but a small fraction are comets. There are over 19,000 known near-Earth asteroids (NEAs), over a
From the Earth to the Moon problem of surviving the incredible acceleration that the explosion would cause. Ardan suggests that Barbicane and Nicholl travel with him in the projectile, and the offer is accepted. In the end, the projectile is successfully launched, but the destinies of the three astronauts are left inconclusive. The sequel, "Around the Moon", deals with what happens to the three men in their travel from the earth to the moon. The novel was adapted as the opera "Le voyage dans la lune" in 1875, with music by Jacques Offenbach. In 1880 the Pall Mall Gazette described Verne’s "Columbiad" as a ‘space-ship’ -