Caleb Scharf
Slate
New York, NY, United States
Contact Caleb
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Past articles by Caleb:
Want to Colonize Mars? What’s Your Plan for Trash?
Our track record on Earth and other worlds is garbage. → Read More
It’s the End of the World ... Somewhere
Extraterrestrials in existential trouble might be easiest to find—and also the most informative → Read More
The Enduring Mystery of Earth’s Water
New clues have emerged about exactly where your last drink came from → Read More
The Angle of Doom
When an asteroid hits a planet, it’s not just about the energy → Read More
The 1,000 Caves of Mars
Want to seek shelter on Mars? There may be a lot of options, and we know where they are → Read More
Death on Mars
The martian radiation environment is a problem for human explorers that cannot be overstated → Read More
Titan’s Geomorphologic Map
From hummocky to dune- and lake-covered, Titan is revealed in its latest global map → Read More
The Spookiverse
The most haunting thing about the universe is how empty it is → Read More
Interstellar Conversations
Could there be information networks across the galaxy? → Read More
Uninhabitable Planets
Calling a distant world Earth-like is bad practice; calling it habitable is not much better → Read More
Asteroid Spit Up
The near-Earth asteroid Bennu seems to be ejecting unexpected particles → Read More
The Birth of Worlds
Stunning new images of young planetary systems create a profound cosmic perspective → Read More
The Birth of Worlds
Stunning new images of young planetary systems create a profound cosmic perspective → Read More
Cosmic Termites
Insects can make topographical biosignatures that are visible from space → Read More
Will Pluto Be the Last Habitable World?
The sun’s future is going to change the status quo → Read More
What if ET is an AI?
After centuries searching for extraterrestrial life, we might find that first contact is not with organic creatures at all → Read More
SETI, the Next Generation?
Time to bring the search for extraterrestrial technosignatures all the way in from the cold → Read More
A Stunning Ultraviolet and Infrared Venus
Processed images from the Akatsuki spacecraft reveal beautiful details of this strange world → Read More
The Answer To Life, The Universe — And Everything? It's 63
Often, as we go through the world, the key is to ask the right question. When it comes to figuring out the nature of physical reality, part of that process → Read More
The Answer To Life, The Universe — And Everything? It's 63
Over time, the expansion of the cosmos and the passage of light has unlocked 63 orders of magnitude to us, each one a new opportunity for novelty and complexity, says guest blogger Caleb Scharf. → Read More