"Corona". This is not entirely correct, because the Sun's corona can be seen at any time using a coronagraph, a special telescope that blocks the light from the Sun itself while allowing the light from the corona to come through.
The Sun's "corona".
Only within the moon's umbra.
We see solar eclipses only during New Moon, but not every New Moon is accompanied by a solar eclipse.
A solar eclipse can only occur at the time of New Moon. A lunar eclipse can only occur at the time of Full Moon.
New Moon
A lunar eclipse is where the moon passes behind the Earth. It is only visual during the night when the moon can be seen. Hence, it will always be a full moon. The moon will have an orange-red color, due to the refraction from the sun. The next lunar eclipse will be in December 2010. A solar eclipse is where the moon passes between the Sun and the Earth. During a partial solar eclipse, only parts of the sun are out of view from Earth, but during a total solar eclipse, the sun is fully blocked; however, solar eclipses are rare and can only be seen from certain places during certain times. The next solar eclipse will be in 2012.
A solar eclipse can only occur at the time of New Moon.
If you are in the path of totality, a solar eclipse is more obvious; it gets dark in the middle of the day. But a total solar eclipse affects only a thin track across the Earth. A lunar eclipse is visible from the entire night side of the Earth, potentially half or more of all humanity. But it happens at night, and isn't as obvious.
An ANNULAR Eclipse only occurs at a NEW MOON. An annular eclipse is a 'ring' of sunlight around the Black Lunar Disc.
A solar eclipse happens only at New Moon. A lunar eclipse happens only at Full Moon.
Yes, but only during a total solar eclipse as it gets dark enough to trick birds into thinking night has fallen.
It is a new Moon. For a solar eclipse, the moon has to be between Earth and the Sun. We get a total lunar eclipse when Earth is between the Sun and the Moon. The Moon would have to be full for it to be eclipsed.