Q:

When is the next complete planetary alignment?

A:

Due to their varying axial tilts, the planets of the Solar System are never completely aligned. However, they do sometimes get close enough to be called an alignment. Planetary alignments as seen from the Earth are more common.

Know More

Full Answer

Astronomers define an alignment as varying levels of proximity between the planets. Universe Today reports that the planets all come within 90 degrees of each other roughly once every 200 years. According to Universe Today, a relatively close alignment of Saturn, Venus, Jupiter and Mars, as seen from Earth, should occur in September 2040.

Learn more in Planets

Related Questions

  • Q:

    What are all the planets?

    A:

    The eight planets of the solar system are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune. The four inner planets are terrestrial worlds, while the outer solar system consists of four gas giants sometimes known as the Jovian planets.

    Full Answer >
    Filed Under:
  • Q:

    Why are planets round?

    A:

    According to NASA, gravity is the reason why planets are round. Gravity causes any matter to attract toward any other matter. When planets began to form, the earth’s solar system was one big swirling disk that contained dust and gas, with the sun at its center. Particles of dust and gas pulled toward each other due to gravity.

    Full Answer >
    Filed Under:
  • Q:

    What is the name of the smallest planet in our solar system?

    A:

    Only a little larger than Earth's moon, Mercury is the smallest of the eight planets in the Solar System and is also the closest to the Sun. With a surface area of 28,879,000 square miles, Mercury's circumference at its equator is 9,525.1 miles.

    Full Answer >
    Filed Under:
  • Q:

    What is the name of our solar system?

    A:

    The planetary system in which the Sun, Earth and nearby planets are located is called the Solar System, with the first letters capitalized. Other networks of planets orbiting stars are called planetary systems and are named after the most prominent star in their systems.

    Full Answer >
    Filed Under:

Explore