After replacing the third window with the steel plug and conducting another unmanned test, the same problem happened again.

A second unmanned test was planned using LM-2, but was canceled as unnecessary.

Nonetheless, the first flight in the program, an unmanned test of the new rocket and spacecraft, could still come in October.

In its unmanned first test, towed by a car, it broke apart in the air.

This was despite the failure of unmanned tests of the Soyuz spacecraft, which still contained flaws.

There are some known versions of the software that were used for unmanned and manned tests.

Another unmanned test might come first.

Gemini 1 is launched, the first unmanned test of the 2-man spacecraft.

The first unmanned test of this version was Cosmos-133, launched on Nov. 28, 1966.

Early unmanned tests of the suitport were conducted in June 2012.