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20th century Astronaut living in the 25th century?
the 20th century is also called the Dissonant Period.
I am pretty sure that it is the early 20th century
19th century
The 20th century began in 1901 and ended in 2000
Radioactive elements were discovered in the 20th century, with the first discovery by Antoine Henri Becquerel in 1896. This discovery laid the foundation for further research by scientists such as Marie Curie and Ernest Rutherford, leading to a better understanding of radioactive decay and nuclear physics.
In the beginning if 20th century.
. Spindletop
Machu Picchu was discovered by Hiram Bingham.
It was first characterized by Alois Alzheimer in the early 20th century.
The 20th century
It was discovered in 1938.
The last planet to discover during the 20th century was Pluto. But it's a dwarft planet so it should maybe be Neptune.
Metalloids were first identified as a group of elements with properties between metals and non-metals in the mid-19th century by chemist Baron Ernst von Reichenbach. However, the concept of metalloids as a distinct group of elements was further developed in the early 20th century by chemist William Crookes.
Penicillin is a type of antibiotic that is produced by mold. It was discovered in the 20th century by Alexander Fleming.
It was first discovered by accident in the late 19th century, but was not used until the early/mid 20th century.
Eliotosaurus was discovered by paleontologist Robert Broom in the early 20th century. Broom found fossils of this dinosaur in South Africa.