Daisy Dobrijevic

Reference Starlink satellites have been developed by SpaceX to provide internet to remote locations. Here we explore the controversial megaconstellation in more detail.

Reference Earth Day occurs annually on April, 22. It began in 1970 and celebrates the environmental diversity of Earth and highlights ways of protecting it.

Reference The sun's atmosphere has three layers: The photosphere, the chromosphere and the corona.

Reference Earth is made up of several layers: the lithosphere, asthenosphere, lower mantle (also known as mesospheric mantle), outer core and inner core.

Reference Planet Mercury is the sun's nearest planetary neighbor. It has short years, long days, huge surface temperature fluctuations and really weird sunsets.

Reference The lithosphere is Earth's outermost layer, composed of the crust and the upper part of the mantle. The layer is divided into chunks called tectonic plates.

Reference The double-slit experiment was designed to investigate whether light is a wave or a particle. It is one of the most famous and weirdest experiments in physics.

Reference Electrons are negatively charged subatomic particles located in the outermost regions of atoms. They are about 1,800 times smaller than protons and neutrons.

Reference Io is Jupiter's fifth moon and its third-largest. It is the most volcanically active body in the solar system.

Reference The solar system gas giants – Jupiter, Saturn, Uranus and Neptune – also known as Jovian planets are helping us learn more about gaseous exoplanets.

Infographic Most astronomers believe the universe began 13.8 billion years ago in a sudden explosion called the Big Bang. Other theorists have invented alternatives and extensions to this idea.

Reference White dwarfs are hot, dense remnants of stars. They are the last observable stage of evolution for low and medium-mass stars including our sun.

Reference Mars missions have been launching for over 50 years. Humanity has sent orbiters, probes and landers to Mars but not every mission has been successful.

Reference Mars' atmosphere is over 100 times thinner than Earth's and is primarily composed of carbon dioxide, nitrogen and argon gases.

Reference White holes are theoretical cosmic regions that are opposite to black holes. Just as nothing can escape a black hole, nothing can enter a white hole.

Reference The Star of Bethlehem led the three wise men to Jesus' birth, according to the New Testament. But what was the Star of Bethlehem? There are several theories.

Reference Neptune is the farthest planet from the sun and was the first to be predicted before it was discovered.

Reference The temperature of Uranus averages minus 320 degrees Fahrenheit. Uranus holds the record for the coldest temperature ever measured in the solar system.

Reference Hale-Bopp was an unusually bright comet that flew close to Earth in 1997. Tragically, Hale-Bopp also influenced the Heaven's Gate cult's mass suicide.

Reference The distance to Mars from Earth constantly changes as they orbit the sun. The average distance between Earth and Mars is 140 million miles (225 million km).

Reference How big is the moon? Our moon is the fifth largest moon in the solar system, with a radius of 1,079.6 miles (1,737.5 kilometers).