Here is a possible concise summary:
The text is about various topics related to space exploration, such as the discovery of planets, the use of animals and rockets, the naming of Uranus, the first words on the moon, and the possibility of a joint US-Soviet mission to the moon. The text covers some historical facts, scientific findings, and hypothetical scenarios. The text aims to inform and entertain the reader with interesting and surprising information.
Here are the key facts extracted from the text:
1. French mathematician Urbain le Verrier predicted the existence and location of Neptune based on the orbit of Uranus in 1846.
2. Pluto was discovered in 1930 as a potential ninth planet, but it was too small to account for the orbital irregularities of Uranus.
3. Voyager 2 revealed that Uranus and Neptune had no orbital anomalies and there was no need for a Planet X.
4. In 2016, two scientists found a pattern of orbital clustering among trans-neptunian objects that suggested a possible ninth planet roughly the size of Neptune with a 15,000-year orbit.
5. The first animal in space was a fruit fly in 1947, followed by many other animals such as monkeys, dogs, mice, hamsters, cats, frogs, etc.
6. Neil Armstrong said "one small step for a man" when he walked on the moon in 1969, but the "a" was not audible in the recording.
7. J1407b is an exoplanet with rings 200 times larger than Saturn's rings.
8. John F. Kennedy proposed a joint mission to the moon with the Soviet Union in 1963, but his assassination and Khrushchev's distrust of Lyndon B. Johnson ended the possibility of collaboration.