Nashua is located in the Central New Hampshire region of the US; it is also part of the Boston metropolitan area. The city's downtown extends al...
Sunset
Twilight
Darkness
Most people know that sunset is the time when the sun goes down. But did you know that the sun doesn't actually set? Instead, Earth rotates into darkness, giving us the illusion that the sun is setting. So what causes sunset?
Well, it's a combination of things. The Earth's atmosphere scatters sunlight in every direction, but blue and violet light are scattered more than other colors. This is why the sky is usually blue during the daytime. As the sun gets lower in the sky, the atmosphere becomes thicker and more dense.
This scattering of sunlight happens to a greater extent, and we see red and orange light more than blue and violet light. That's why sunset is usually a beautiful red or orange color. So next time you see sunset, remember that you're actually seeing Earth rotate into darkness!
Nashua is located in the Central New Hampshire region of the US; it is also part of the Boston metropolitan area. The city's downtown extends along the banks of the Merrimack River, which flows through it. Nashua has a largely suburban character, located between Manchester and Concord, and is the principal city in the Merrimack Valley. The weather in Nashua is typical of the New England region - cold winters and temperate summers. The city is also close to the Canadian border, making it a gateway to the northern states. The population of Nashua was 117,522 according to the 2010 census. The closest states and capitals are Boston, MA (approximately 38 miles away), Concord, NH (approximately 37 miles away), and Manchester, NH (approximately 22 miles away). Nashua is the thirteenth most populous city in the US. The population of Nashua is 84% White, 10% Black, and 2% Latino. The median household income is $85,530, and the median age is 43 years.
}As the sun sets, the sky slowly grows dark. For many people, this is a time to relax and wind down for the day. But have you ever wondered exactly when it gets dark? The answer may surprise you.
Did you know that darkness actually begins long before the sun sets? As the sun gets lower in the sky, its light has to travel through more atmosphere. This filters out some of the blue light, making the sun look redder. At the same time, shadows get longer and darker. So by the time the sun finally dips below the horizon, darkness has already begun to fall.
Of course, not all places on Earth experience darkness at the same time. Near the equator, the sun sets and rises almost directly overhead. This means that there is less of a difference between daytime and nighttime. Closer to the poles, however, the sun stays low in the sky for much of the year. This leads to longer periods of darkness during wintertime.