They can go in incubator now. They can be put in incubator 2 days after set or up to 8 days. The duck egg that was layed yesterday can be but wait a day or 2 for the newer ones. I would wait a while until you have a clutch of eggs that are needed, the eggs will be fine up to 8 days.
At last, on January 31, 1958, the United States succeeded in launching its first satellite, the Explorer. The Explorer was still slighter than Sputnik, but its launch sent it deeper into space. The Soviets responded with yet another launch, and the space race continued.
According to test rec â¦ ords, the first rocket to reach space was likely the fourth test launch on October 3, 1942. The first artificial satellite was launched by the USSR in 1957, the Sputnik 1, using the Soviet's R-7 rocket, most used for their ICBM missiles.