1–20 of 41 results
an aerial shot of the earth at night with bright yellow lights on a dark background

Cosmic Relief with David Grinspoon

Searching for Intelligence on Earth

Space exploration can serve as an antidote to war. And vice versa.

Cosmic Relief with David Grinspoon

Grave Expectations

We can try to devise rules for how detecting alien life should unfold, but E.T. might not play along.

a green-blue curled worm looking being

Cosmic Relief with David Grinspoon

Interstellar Stowaways

Could microorganisms travel between the stars?

Cosmic Relief with David Grinspoon

Many Happy Returns

Venus’s eight-year cycle has the author dreaming of 2029.

a half of a white planet on the right side against a black background

Cosmic Relief with David Grinspoon

Life Beyond Earth?

By century’s end, the author thinks we’ll have an answer to this question. But what kind of answer?

close up of a bug's face with two black eyes and white antennae and an orange-white body

Cosmic Relief with David Grinspoon

The Prime of Their Lives

The strange cycles of cicadas offer timely insight into the search for ET.

a view of a brown landscape with part of a machine in the forefront

Cosmic Relief with David Grinspoon

Eavesdropping on Mars

The most compelling audio the Perseverance rover will record might well be the sounds it generates itself.

two planets on opposite corners on a black background

Cosmic Relief with David Grinspoon

The Cosmic Conjunction

When the world’s got you down, look up and tune into orbital time.

an aerial shot of a large cement disc in the midst of trees

Cosmic Relief with David Grinspoon

Adiós, Arecibo

On the painful loss of an iconic Space Age observatory.

a blue and pink planet in half shadow against a black background

Cosmic Relief with David Grinspoon

Venus Surprise

Will phosphine be the “Mars rock” of our sister planet?

a bright light streak across a dark background

Cosmic Relief with David Grinspoon

My Virtual Comet Sighting

There’s nothing like being there, but these days we can all find a pretty good view.

a small grey rock like object against a rocky terrain orange background

Cosmic Relief with David Grinspoon

Not From Around Here

NASA’s rovers have found meteorites on Mars that came from elsewhere. What secrets do they hold about Martian history and climate?

a half circle of a blue planet with white clouds

Cosmic Relief with David Grinspoon

Venus Is Dead. Long Live Venus.

In which I attempt a contrarian argument against my own contrarian argument.

the curiousity on dark orange land with a light orange sky

Cosmic Relief with David Grinspoon

Mars Coughs Up Another Mystery

What’s behind the strangely fluctuating levels of oxygen on the Red Planet?

a comet streaks by a floating satelitte against a black background with white star dots

Cosmic Relief with David Grinspoon

Mission to an Interstellar Object

It’s time to visit a body from another star system — without leaving ours.

a tall thin building at night with the image of a rocket projected onto it

Cosmic Relief with David Grinspoon

A Fitting Apollo Monument

Fifty years after the fact, the National Mall hosts a spectacular, and deeply moving, celebration.

an artist's rendition of venus with blue and gold streaks on a white background

Cosmic Relief with David Grinspoon

Sea Change on Venus

Tidal drag from a putative ocean might have helped cool our sister planet for billions of years.

Can a Planet Think?

Cosmic Relief with David Grinspoon

Can a Planet Think? The Gaia Hypothesis, Rethought

Humans have irrevocably changed the planet. Have those processes gone so far that Earth’s biosphere has begun to resemble a human brain?

Chang'e 4 lander

Cosmic Relief with David Grinspoon

One Small Step for Plantkind

With a seed germinated on the lunar farside, Earth’s biosphere made its first tentative foray into the cosmos.

Greenland crater

Cosmic Relief with David Grinspoon

Sudden Impact: What Greenland's Crater Means for Our Planet's History

The discovery of a recent huge meteor crater beneath Greenland’s ice sheet has reignited a debate over cosmic influences.

Advertisement
Advertisement
Advertisement
Advertisement