Author Archives: Caleb A. Scharf

Jupiter Now Has 69 Moons

Our local gas giant has two more natural satellites added to its roster

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Take an HD Ride around Jupiter [Video]

An exquisite time-lapse of our local, surprisingly complex gas giant

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Alone on Mars for 150 Months

The Martian has already happened, just not with a human

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Exocomets Light Up 100 Billion Kilometers of Space

A remarkable new image reveals the teething pains of an entire planetary system

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The Crazy Scale of Human Carbon Emission

Want some perspective on how much carbon dioxide human activity produces? Here it is

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New Evidence for Hydrothermal Havens in Enceladus

Spurting out molecular hydrogen and water, the icy moon Enceladus looks even tastier in the search for life

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The Real Expanse

Human colonization of space would be terrifyingly hard, and that’s the best thing about it

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Astrobiology Roundup: Dust Traps, Juno, Mars Lava and more

What’s happening in the universe?

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Churchill the Astrobiologist?

Newly released writings by Winston Churchill on life in the universe reinforce how keenly scientific his thinking was

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Ancient Meteorites Were Different

Types of rocky meteorites rare today were abundant 466 million years ago

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Despair Not This Earth

Rational thinking, creativity and wonder are powerful tools in the universe

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Vast Shadow Sweeps Across Young Exoplanetary System

18 years of Hubble Telescope data on a star system reveals a surprising phenomenon spanning tens of billions of miles

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NASA’s 50 Years of Mars Exploration [Video]

Humans have been visiting and exploring Mars for more than half a century, and NASA has released a video celebrating the agency’s remarkable contributions

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Another 1/230,000,000th of a Galactic Orbit

As the solar year ends, let’s try to stop being so parochial

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Earthrise Renewed

Forty-eight years ago human eyes first witnessed Earth rising over the Moon, today we can all see it in high-definition

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Fresh Ideas for Chasing Consciousness

Understanding life in the cosmos includes tackling the problem of consciousness—a new institute called YHouse intends to help

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Cassini’s Grand Finale, Part I: Ring-Grazing and Turbulence

Long-lived space mission starts a bold last-dance with gas giant Saturn

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Cassini’s Grand Finale, Part I: Ring-Grazing and Turbulence

Long-lived space mission starts a bold last-dance with gas giant Saturn

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Fermi’s Basement Paradox

Where in the world did Fermi go?

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Spawning Stars

An extraordinary new image shows a protostellar disk fragmenting into multiple stars

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Meteoritics on an Alien World (with Lasers)

NASA’s Curiosity rover finds a foreign object on Mars, and engages in some science awesomeness

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Fire Burn, and Cauldron Bubble

As All Hallow’s Eve approaches, take a look at what’s brewing in the cosmic night

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Fire Burn, and Cauldron Bubble

As All Hallow’s Eve approaches, take a look at what’s brewing in the cosmic night

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Ultraviolet Mars [Video]

NASA’s MAVEN mission returns stunning ultraviolet images of the Red Planet

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More Evidence for an Ocean inside Pluto

A simulation of Sputnik Planum’s formation supports the idea of a deep, salty ocean 

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So You Want to Terraform Mars?

The SpaceX vision for a multiplanet species prompts thinking on how to make a planet more habitable

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Breaking Up Is What You Do (When You’re a Comet)

Hubble Space Telescope catches the details of a complex cometary breakup as it approaches the sun

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Rocket Launches Are Actually Surprisingly Successful

The recent SpaceX launchpad explosion is a reminder that rocketry is tricky, but also remarkable for accomplishing as much as it does

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Proxima Centauri Just Became Our Gateway to the Cosmos

Astronomers obtain convincing evidence of a potentially habitable world around our nearest neighboring star—this could change everything

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Do Giant Planets Contain "Dark" Hydrogen?

Laboratory research suggests that an unexpected layer of semimetallic, optically dark hydrogen lurks inside worlds like Jupiter and Saturn

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