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.
An engineering group would be responsible for the product. The US Jet Propulsion Laboratory in conjunction with the US army and navy was launched in 1958. This was the first observation/monitoring satellite successfully launched. Remote sensing is done using a photographic camera. This was performed in the 1860s using hot air balloons.