If we look at Mars today, we’ll see a cold, dusty desert, but peel back the surface geology, and the planet tells quite a different story! Networked river valleys, ancient deltaic fans, carved impact crater lakes, and potential palaeoshorelines all point to a warm and active past during the Noachian and early Hesperian epochs, circa …[Read More]
In a couple of days, on 22 February, we will mark a major milestone in space history: 40 years since the launch of the first Swedish Viking satellite, when an Ariane rocket from Kourou in French-occupied Guiana launched on 22 February 1986! While the general public might hear the word Viking and picture longboats, heavy …[Read More]
Humankind’s development is often associated with facing challenges. The original ideas required to solve new problems keep pushing the power of human creation towards more sophisticated and practical solutions. However, part of the excitement of any challenge comes from the dangers of trying something that nobody has accomplished before. An example of technological advances driven …[Read More]
January 19th marked the 175th birthday of Dutch astronomer Jacobus Kapteyn. His work and legacy had a profound yet subtle impact on the astronomical community and our understanding of the cosmos. His lasting contributions and methodologies continue to be refined and provide the foundation for ongoing astronomical research and discoveries. After he completed his studies, …[Read More]
Hello Silke and welcome to GeoTalk! Before we dig into your topic of expertise, could you introduce yourself to our readers? Hello, Simon. My name is Silke Asche, and I am a chemist in astrobiology and part of the Agnostic Biosignature Collective led by Dr Heather Graham at NASA’s Goddard Space Flight enter. My Ph.D. …[Read More]
Today, 17 December, marks 125 years since the formal announcement of one of the most eccentric, ambitious, and ultimately consequential prizes in the history of science: the Prix Pierre Guzman. Announced by the French Académie des Sciences in December 1900, the award promised 100,000 francs, which is the equivalent of hundreds of thousands of dollars …[Read More]
Jupiter’s moon Io is the most volcanically active world in our solar system, with hundreds of volcanoes that constantly erupt on its ever renewing surface. Although Io always points the same side toward Jupiter in its orbit around the gas giant, two other Galilean moons, Europa and Ganymede, pull Io’s orbit into an irregularly elliptical …[Read More]
On December 11, 2024, while taking part in AGU’s 2024 Annual Meeting, I attended a press conference hosted by experts from the University of Colorado Boulder and the University of Michigan that focuses on the serious risks posed by space debris in Low Earth Orbit (LEO). As we are heading towards an increasingly crowded space …[Read More]
Hello Georgia – welcome to GeoTalk! Could you tell our readers a little bit about yourself and your background? Thank you, Simon! I’m Georgia Moutsiana, a space scientist and PhD candidate at the National and Kapodistrian University of Athens, Greece. My research focuses on understanding the processes that accelerate and transport charged particles in planetary …[Read More]
And what if we could prevent a catastrophe as old as the dinosaurs?… As Hera’s mission launched last month, this blog post aims to give you insights into this mission and why it matters. Continue reading and find out! One of humans’ biggest rebellious acts against insignificance is staring at the sky and wondering what …[Read More]
