Movie with a returning probe/satellite, an alien infection, and a nuke at the end

Question

I've been trying to find the name of a movie I remember seeing on TV on several occasions. What I remember of the plot:

1. A probe/satellite returns to earth
2. It's brought to an underground facility and is studied
3. An alien bacteria onboard spreads, taking over the computer, infecting people and growing into a monster (John Carpenter/The Thing style)
4. The facility is nuked at the end of the movie to kill it off, but you see the alien escaped the facility, walking off-screen as the bomb goes off.

I've been scouring lists of sci-fi movies to no avail. Sound familiar to anyone?

Answer 1

The movie is Lifeform with Cotter Smith and Ryan Phillippe.

When the Viking space capsule suddenly returns to Earth from its long ago trip to Mars, it brings with it an intelligent visitor that is part "Alien" and part "ET". Encased in armor, it extends a humanlike form from its shell to examine its surroundings and shows an interest in humans including a soft caress of a female scientist prior to the Army killing it. This only enrages its sibling.

The Viking probe returned and carried an alien egg that grew to an adult. Another egg was laid in the facility, and that creature had the memories of the alien which laid it. They nuked the facility at the end. The alien was outside the facility but got nuked. At the end you saw his dust blow away, leaving an egg lying on the desert.

The review here provides more details, including that the base being nuked was the result of them running out of money, preventing the original ending.