Articles

For decades, our exploration of other worlds has been dominated by images. We picture distant planetary objects through panoramas, mosaics, and false-colour maps; an achievement that I cover in great detail in my second book here . However, there is another way to experience some of these worlds: by listening to them. Although several planets and moons possess atmospheres dense enough to transmit sound, only a small number of space missions have carried microphones. The most

In what feels like a rapid succession of blows, after last month’s post questioning Titan’s status as an ocean world, a new study now suggests that Europa lacks the internal energy required to remain geologically active, with implications for other ocean worlds. For decades, Europa has occupied one of the most prominent places in the scientific imagination. Many have wondered whether the moon has a geologically active seafloor hosting hydrothermal vents that, on Earth, sust

For anyone who has known me over the years, you’ll know I’ve spent a large amount of time talking about the five moons in our Solar System that harbour subsurface oceans of liquid water: Europa, Enceladus, Callisto, Ganymede, and Titan. I explored this topic in depth in my first book, Exploring the Ocean Worlds of Our Solar System  ( now in its second edition ), where I examined every line of evidence for these remarkable oceans. In the process, I had the privilege of speakin

I began the year predicting it would be the year of Starship (see my January post ). It turned out not to be. A string of early-year setbacks slowed the program’s momentum, and SpaceX's behemoth took longer than expected to find its stride. Although Starship notched two successful test flights in August and October, it has yet to launch a commercial payload into orbit. Enter New Glenn, another heavy-lift, reusable, launch system, this one from Blue Origin. On November 13, it

What if I told you that the past 65 years have been a continuous replay of 1492? Through the robotic exploration of our Solar System, we've turned what were specks of light in the night sky into tangible new worlds: Mars, Ceres, Pluto, etc. As such, our Solar System teems with targets that beg investigation. The Moon's South Pole holds reserves of permanent water ice, while Venus, shrouded in its runaway greenhouse atmosphere, could reveal further insights about the processes

When a meteorite slammed into what is now western Finland some 77 million years ago, it left behind more than just a scar. The Lappajärvi crater, a 23-kilometre-wide basin, became a geological time capsule, and, as it turns out, a biological one too. We often think of impact events as extinction-level catastrophes, such as what happened with the extinction of all non-avian dinosaurs 66 million years ago. And they certainly can be. But they also create something else as an im

It is hard to believe that 3I/ATLAS, the third confirmed interstellar object to enter our solar system, was only discovered two months...

For centuries, science has gradually eroded the notion of our exceptionalism—from Darwin’s revelations about our biological kinship with...

The Trifid and Lagoon nebulae. The first released image from the Vera C. Rubin Observatory. Credit:NSF–DOE Vera C. Rubin Observatory...

The current landscape of space exploration is incredibly dynamic, with numerous developments taking place. I could have covered various...

Ever since I learned about the concept of Planet 9 proposed by Mike Brown, an astronomer at the California Institute of Technology, and...

When it comes to deep space exploration, the United States has been reigning supreme. From the Apollo missions that took us to the Moon...

We live in extraordinary times. Not a month goes by without a new terrestrial exoplanet getting its shiny entry in the NASA Exoplanet...

In last month's post, I began the year with an optimistic outlook for human spaceflight. This month, I plan to bring a dose of realism...

Over the past few years, as I've been jotting down my thoughts on policy events, noteworthy spacecraft launches, and recent discoveries...

Mars has been keeping me busy! This is the fourth article I have written on the red planet in twelve months and who knows how many I will...

And we're off! Watching the Falcon Heavy launcher effortlessly lift the 6-ton Europa Clipper spacecraft into the sky on the 14th of...

My latest book on ocean worlds is barely off the press and already a new study has surfaced shedding light on one of the ocean world...

Finally, after over a year of hard work, the second edition of my first book is out! I’m thrilled about this new edition—essentially a...

Let me put this out in front: Carl Sagan is a hero of mine. How could he not be? He was a scientific communicator par excellence. His...