A planetarium is a facility designed to replicate the features of the universe in the night sky. Similar to a museum or science center, planetariums are developed in communities to offer education and entertainment to people curious about the field of astronomy. Visitors typically pay admission fees to enter just as they would at a theater or zoo.Know More
A standard planetarium room has a projection of the night sky on a dome ceiling. Visitors sit in theater-style seating below and look up at the projection. In some rooms, the images are static. In others, movement takes place to replicate movement of the moon, stars and planets in the sky. Some science centers have planetarium rooms where films about the universe are displayed on the dome ceiling for people to watch.
Some large planetariums have telescopes for guests to use to detect more intricate details of the universe and smaller stars in the sky. Multimedia technology making use of sound and lights is also used to deliver live presentations on different astronomical topics. People can visit at different days and times to learn about different elements of the sky. Elementary schools in some communities schedule planetarium field trip visits for some students as part of their curriculum.Learn more about Astronomy
Sirius (also known as Alpha Canis Majoris or the Dog Star) is the brightest star in the night sky. It is located in the constellation Canis Major. Sirius is almost 25 times brighter than the sun and about twice as massive.Full Answer >
The planet Venus becomes visible in the west just after sunset and is the third brightest natural object in the night sky. Venus is covered by thick clouds that reflect more than 70 percent of the sunlight that reaches the planet.Full Answer >
While NASA has not released an official statement regarding the four so-called blood moons of 2014-2015, it has published a report that explains when and why they show up in the night sky. The series of lunar eclipses began on April 15, 2014.Full Answer >
A black hole naturally lasts for billions and billions of year—many more years than the current age of the universe. The reason is that the only way a black hole can die is through a form of "evaporation," which occurs particle by particle; this is an unimaginably slow process.Full Answer >