Explanation:

• A lunar eclipse is a celestial event that occurs when the Earth passes directly between the Sun and the Moon, causing the Earth's shadow to be cast on the Moon's surface. This phenomenon can only happen during a full moon when the Earth, Moon, and Sun are closely aligned in space.
• There are three main types of lunar eclipses: o Penumbral Lunar Eclipse: In a penumbral lunar eclipse, the Moon passes through the outer, lighter part of the Earth's shadow called the penumbra. This type of eclipse is subtle, and the darkening of the Moon's surface is often difficult to discern with the naked eye.
• Partial Lunar Eclipse: During a partial lunar eclipse, a portion of the Moon passes through the darkest part of the Earth's shadow, known as the umbra.This results in a part of the Moon appearing darkened or shadowed, while the rest remains in full view.
• Total Lunar Eclipse: A total lunar eclipse occurs when the entire Moon passes through the Earth's umbra. During this type of eclipse, the Moon can take on a reddish or copper hue due to the scattering of sunlight by the Earth's atmosphere.
• This reddish appearance is often referred to as a "Blood Moon.
• " Hence pair 2 is correctly matched.
• • Lunar eclipses are safe to observe with the naked eye, unlike solar eclipses, which require protective eyewear.
• • Total lunar eclipses are less common than partial and penumbral eclipses.
• The frequency of total lunar eclipses can vary from year to year.
• It's possible to have multiple total lunar eclipses in a single year, but it's also possible to have years with no total lunar eclipses.
• • A monthly Blue Moon refers to the second full moon within a single calendar month.
• Hence pair 3 is correctly matched.
• • A supermoon is a full moon or a new moon that nearly coincides with perigee—the closest that the Moon comes to the Earth in its elliptic orbit—resulting in a slightly larger-than-usual apparent size of the Moon as viewed from Earth.
• Hence pair 1 is not correctly matched.