The recent fall to Earth of a failed Soviet Venus probe from the 1970s has become a detective story of sorts. Different computer models were used to predict the reentry.

Different computer models were used to predict the reentry of the 1970s-era Soviet Venus craft Kosmos-482. Why were they divergent, and how can we improve our debris-fall forecasts?

Senaator Rand Paul (R-KY) condemned Saturday's military parade in Washington, comparing it to similar marches in the Soviet Union and North Korea.

Kennedy met with the CIA following a 1955 tour of the Soviet Union, relaying his observations to the spy agency as a voluntary informant, the documents show.

Robert F. Kennedy met with the CIA after a trip to the Soviet Union, newly declassified files show The CIA released 1,500 pages of previously classified documents relating to the assassination of ...

Kennedy met with the CIA following a 1955 tour of the Soviet Union, relaying his observations to the spy agency as a voluntary informant, the documents show.

The documents released Thursday reveal Kennedy met with the CIA to share his observations following a 1955 trip to the Soviet Union.

According to the Associated Press, the records show Kennedy voluntarily shared his observations with the CIA after a 1955 visit to the Soviet Union, acting as an informal informant.

Kennedy met with the CIA following a 1955 tour of the Soviet Union, relaying his observations to the spy agency as a voluntary informant, the documents show.

How the U.S. and the Soviet Union Made Unsuccessful Attempts to Collaborate During the Space Race Could the moon landing have been an international program?