Which is the only species of hominid that still exists today?

Strictly speaking, a hominid is considered as a general term corresponding for Homo, Pan and Gorilla. If this pertains to the genus Homo (class Hominini), then we only have one species left called Homo sapiens (modern humans) which developed from the ancestors called Homo erectus or Neanderthals. However, hominid could also mean the gorillas and chimpanzees belonging to another genus called Pan (class Hominini) and Gorilla (class Gorillini), respectively.

The soviet union beat the us to the first successful launch, with the october 4, 1957, orbiting of sputnik 1, and later beat the us to have the first human in earth orbit, yuri gagarin, on april 12, 1961. the "race" peaked with the july 20, 1969, us landing of the first humans on the moon with apollo 11