What do scientists believe may have happened to leave mars vulnerable to the solar winds?

The outer core of Mars cooled too quickly and the magnetic field didn't have time to fully form so the solar winds destroyed the magnetic field and the atmosphere

The soviet union beat the us to the first successful launch, with the october 4, 1957, orbiting of sputnik 1, and later beat the us to have the first human in earth orbit, yuri gagarin, on april 12, 1961. the "race" peaked with the july 20, 1969, us landing of the first humans on the moon with apollo 11

Life, yes life it self madden