the 2 in Sputnik 2 means it is the second to be built.
It means it was the first sputnik.
Sputnik-2
The dog, Laika, died due to temperature increase.
Sputnik 1 and Sputnik 2 were artificial satellites that traveled around the Earth. People thought that Sputnik 1 was spying on them, but all it did was transmit a simple tracking signal for 3 weeks.
Sputnik 2 was a solid object which was conical is shape. Solid objects do not have perimeters.
Sputnik 2 has been in space for sixty (60) days.
Laika was sent into space aboard Sputnik 2.
They were unmanned, although Sputnik 2 carried a dog into space.
me
Sputnik 1 only housed some electronics, while Sputnik 2 held a dog called Laika.
Russia
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