Because its too far away.
It is hard to see the planet mercury because Mercury is far away, Also the sun reflects off Mercury to make it hard to see.
Being the innermost planet, it is very close to the sun and so is visible only near sunrise and sunset when the sky is often still light. It is very difficult to see it against the sun's bright disk.
Scientists do not observe Mercury as often because it is difficult to do so.
Planet Mercury doesn't have an atmosphere so it cannot have hurricanes.
Mercury is the planet often hidden in the sun's glare due to its close proximity to the sun. Its orbit lies within Earth's orbit, so it is sometimes difficult to observe it in the bright sunlight.
Mercury is the smallest planet, so there isn't one with half the diameter.
No. Mercury orbits the sun, so it is a planet rather than a moon.
Only one planet mercury so I guess that makes it rare
Mercury is closest to the sun. There are so many rocks ,we can't live in that planet.
You can see it just before sunrise and just after sunset depending on the relative positions of the Earth and mercury. It is very close to the sun so you will need to know when and where to look
Mercury has a surface, so yes you could stand on it.
Mercury is the closest planet to the Sun, and MUCH closer to the SUN than the Earth so whenever we (astronomers or anyone from Earth) observe Mercury, we are looking almost directly at the Sun. Even when the Sun is not behind Mercury (from our perspective), we are still looking through all the light, radiation, and electromagnetic interference between the Earth and Mercury. This makes observing Mercury very hard, even with the latest in technology, because the interference is intense due to Mercury's close proximity to the Sun. The only way to get accurate readings (free from the Sun's interference) is to put a satellite in orbit around Mercury. This was finally accomplished in 2011 when the MESSENGER satellite began mapping the surface of Mercury.