Universe

Venus, the second planet from the sun

Venus is the second planet from the Sun, orbiting it every 224.7 Earth days. What is Venus? Venus is the second planet from the Sun, orbiting it every 224.7 Earth days. It has the longest rotation period (243 days) of any planet in the Solar System and [ … ]

What is the Space Launch System (SLS)?

The Space Launch System (SLS) is an American Space Shuttle-derived heavy expendable launch vehicle. It is part of NASA’s deep space exploration plans including a manned mission to Mars.   What is the Space Launch System (SLS)? [ … ]

Pluto in the Kuiper belt in the Solar System

The Kuiper belt, sometimes called the Edgeworth–Kuiper belt, is a circumstellar disc in the Solar System beyond the (known) planets, extending from the orbit of Neptune (at 30 AU) to approximately 50 AU from the Sun.   What is the Kuiper belt? It is [ … ]

Brown dwarfs are simply amazing

Brown dwarfs are substellar objects that occupy the mass range between the heaviest gas giant planets and the lightest stars.   What are brown dwarfs? Unlike the stars in the main-sequence, they are not massive enough to [ … ]

What everybody ought to know about galaxies!

A galaxy is a gravitationally bound system of stars, stellar remnants, interstellar gas, dust, and dark matter.   What are galaxies? The word galaxy is derived from the Greek galaxias, literally “milky”, a reference to the Milky Way. Galaxies range in size [ … ]