UnScramble this Word: a t l t l e o g?

Questions

Francis Gary Powers convicted of spying by USSR (U-2 incident).?

Sputnik 5 carries 3 dogs into orbit (later recovered alive).?

Groucho Marx, died in Los Angeles at the age of 86.?

The crew of Soyuz 32 returns to Earth aboard Soyuz 34.?

Soyuz T-7 is launched.?