Oceans of the Solar System

Created by the Universidad de Puerto Rico en Arecibo (the University of Puerto Rico at Arecibo) scientists, this amazing infographic shows the volumes of the oceans of the Solar System. The unit used is the volume of the liquid water on Earth, so the ocean volumes of the other planetary objects are given by the …

Moon passing in front of Mars in this spectacular video

On September 6, 2020, French astrophotographer Thierry Legault (@ThierryLegault) went to the South of Lisbon to capture the event of the Moon passing in front of Mars. The result is this spectacular video, titled “Occultation of Mars by the Moon” by Legault himself.

Astronaut Chris Hadfield reviews 12 popular Space movies, including “Gravity” and “Interstellar”

In the video published on March 24, 2020, by the Vanity Fair magazine below, Canadian retired astronaut and former commander of the International Space Station (ISS), Chris Hadfield reviews space movies, including “Gravity” and “Interstellar”.

Planetary confusion: why astronomers keep changing what it means to be a planet

As an astronomer, the question I hear the most is why isn’t Pluto a planet anymore? More than 10 years ago, astronomers famously voted to change Pluto’s classification. But the question still comes up. Christopher Palma, Pennsylvania State University

Earth’s atmosphere is leaking and NASA is sending rockets to understand how

Earth’s atmosphere is leaking: around 90 tonnes of material escapes and streams out into space from our planet’s upper atmosphere every single day. To understand this escape, NASA launches rockets into space. The space agency also sends scientists to a tiny Arctic town named Ny-Ålesund (English: New Alesund) on the island of Spitsbergen in Svalbard, …

Martian Scenic Overlook by Curiosity

An amazing video by NASA titled “Curiosity at Martian Scenic Overlook”. Curiosity Project Scientist Ashwin Vasavada gives a descriptive tour of the Mars rover’s view in Gale Crater which is 154 kilometers (96 miles) in diameter and estimated to be about 3.5-3.8 billion years old. It is created by an impactor. The crater is also …

Why Mars is cold despite an atmosphere of mostly carbon dioxide

The recipe for the temperature of a planet’s surface has four major ingredients: atmospheric composition, atmospheric density, water content (from oceans, rivers, and air humidity) and distance from the Sun. There are other ingredients, including seasonal effects or the presence of a magnetosphere, but these work more like adding flavour to a cake. Paulo de …