The unique thing concerning the Sputnik 2 (compared to previous Sputnik 1 satellite) was the fact it carried the first living being into other space - a dog named Laika. "Laika" translates to English as "Barker".
The dog, Laika, died due to temperature increase.
Sputnik 2 has been in space for sixty (60) days.
They were unmanned, although Sputnik 2 carried a dog into space.
Sputnik was a series of satellites built and launched by the then Soviet union. Sputnik 1 and 2 became the first two man made objects to attain orbit around the Earth.
The first artificial satellite was Sputnik I, launched by the Soviet Union on the 4th of October 1957
the 2 in Sputnik 2 means it is the second to be built.
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 has been in space for sixty (60) days.
Sputnik 2 was a solid object which was conical is shape. Solid objects do not have perimeters.
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
no