Without a doubt there are more scientists observing Earth than any other planet.
However, "externally" I would say it would be Mars after The Moon.
Most of the NASA planets fall in the world, although a few of them haven't, whereas relatively few non-NASA planets fall in the world.
One of the most famous modern NASA scientists is Dr. Jim Green, who has served as NASA's Chief Scientist and made significant contributions to planetary science research, particularly in the fields of astrobiology and planetary exploration.
No. In fact most jobs at NASA would be scientists, engineers, accountants, architects, and administrators ranging across a number of disciplines. Flying would be a very small and highly competitive part of NASA's program.
NASA has played a significant role in advancing space exploration and technology, providing benefits such as satellite communication, weather forecasting, and Earth observation. They have also contributed to scientific discovery, technological innovation, and inspiring the next generation of scientists and engineers.
some scientists say yes others no but most say no
More than half
People have known about Mars since ancient times. Indeed, its name comes to us from the ancient Romans who associated it with their god of war (Mars) because of the planet's red color. Nasa probably found out about mars from going to school. Most of the people who were hired at NASA back in its early years had to be pretty smart, so most of them probably came from good schools. On the other hand, thanks in part to Percival Lowell, the idea that some form of civilization existed on Mars was wide spread during the early 20th century, and it fueled the literary Genera known as "Science Fiction." It is possible that many NASA scientists knew about Mars even before they went to school by reading about it in Science fiction and Fantasy magazines.
NASA? A2. I'd expect the place with the largest concentration of scientists would be the universities. From undergraduate, right through to professors emeritus.
Not yet, at least. NASA is looking, as well as most other space programs around the world.
Technically speaking... Neptune. It was pluto, but scientists considered it no longer a planet.
Hydrogen is the most commonly observed element in the universe and is likely contained in every planet.
The planet at 72 AU from the sun is Sedna, a trans-Neptunian object in the outer region of the solar system. Sedna has an extremely elongated orbit that takes it very far from the sun at its most distant point.