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Japan's mission to Mars is one of the most ambitious in spaceflight history. It aims to become the first spacecraft to return to Earth from

Dean Robbins is a journalist and children's author. He contributed this article to Space.com's Expert Voices: Op-Ed & Insights.

The pioneering computer scientist

On Oct. 18, 1963, a cat went to space! Félicette was a French "catstronaut" who became the first and only feline to fly to space.

While the U.S. and Soviet Union were busy launching primates, dogs and humans, the French decided to join the space race by launching a cat. Félicette, a stray tuxedo cat from the streets of Paris, was a substitute for another cat named Fe...

Astronomers estimate that our home galaxy, the Milky Way, has churned out more than 10 million black holes over its 13-billion-year history. Yet so far, they have found only 70.

Now, a group of astronomers in the U.K. is trying to close that vast gap by enlisting the public. Their project, called

Spain is one of the easiest places in the world to experience the total solar eclipse on Aug. 2, 2027. The so-called "eclipse of the century" first makes landfall in Andalucía, where totality will last up to 4 minutes and 40 second...