Veículo

ASDNews (Holanda)
Em 2025: 0 notícias
Desde 1995: 3 notícias

ESA's Cheops Finds an Unexpected Ring Around Dwarf Planet Quaoar

Publicado em 08 de fevereiro de 2023
Such an event is known as an occultation. Observing how the light from the occulted star drops provides information about the occulting object’s size and shape, and can reveal whether the intervening object has an atmosphere or not. In this case, smaller drops before and after the main occultation betrayed the presence of material in orbit around Quaoar. Quaoar is one of a collection of small, distant worlds known as trans-Neptunian objects (TNOs). Roughly 3000 are known. As the name [...]