Expert Voices: Op-Ed & Insights

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One of the first images from the James Webb Space Telescope filled with stars and galaxies.
Something is wrong with Einstein's theory of gravity

By Kazuya Koyama, Levon Pogosian Published

Albert Einstein's theory of general relativity has been remarkably successful in describing the gravity of stars and planets, but it doesn’t seem to apply perfectly on all scales.

Particle Physics
An aerial view of the massive radio dish at Arecibo Observatory after the telescope's collapse.
NSF plans another collapse for Arecibo Observatory (op-ed)

By Joanna Rankin, Mary Fillmore Published

The collapse of the world's most powerful radio and radar telescope didn't kill off science at the Arecibo Observatory, but the National Science Foundation might.

Astronomy
An illustration of Earth and deep space behind it.
Scientists have traced Earth's path through the galaxy via tiny crystals found in the crust

By Chris Kirkland, Phil Sutton Published

Tiny grains of minerals smaller than the width of human hair hold clues to the construction of our planet Earth and its path through the Milky Way.

Earth
An illustration of an asteroid approaching Earth.
Mystery crater potentially caused by relative of dinosaur-killing asteroid

By Uisdean Nicholson, Sean Gulick, Veronica Bray Published

The surprise crater was discovered on Earth's unexplored ocean floor.

Asteroids
earth with half on fire and large rock in background
Curious Kids: What would happen if the world split in half?

By Jonti Horner Published

The solar system isn't as violent as it used to be, when giant impacts could shatter worlds.

Earth
Artist’s impression of the asteroid discovered toward the Sun.
Astronomers have detected another 'planet killer' asteroid. Could we miss one coming our way?

By Steven Tingay Published

If you surfed the web this morning, you may have seen news of the latest existential threat to humanity: a “planet killer” asteroid named 2022 AP7.

Asteroids
The strict ratios of elements that combined into other elements gave scientists a clue that matter might have distinct component parts, now called atoms.
How did we figure out atoms exist?

By Paul Sutter Last updated

The concept of atoms had been floating around off and on for a few millennia, but it took some clever experimentation to pinpoint their existence.

Astronomy
An illustration of what the inside of a wormhole might look like. Swirls of various colors in a tube-like shape streak throughout a field of stars..
Curious Kids: What is exotic matter, and could we use it to make wormholes?

By Carolyn Devereux Published

Curious Kids: what is exotic matter, and could we use it to make wormholes? – Julia, aged 14, London

Black Holes
A pair of astronauts embrace against a rocky background.
#MeToo in space: We must address the potential for sexual harassment and assault away from Earth

By Maria Santaguida, Judith Lapierre, Simon Dubé Published

The realities of sexuality and intimacy in space are mostly omitted from discussions of human factors associated with working and living in space.

Space Exploration
A computer illustration of the creation of separate parallel universes as fluctuations in a quantum foam
'Spooky action at a distance' can lead to a multiverse. Here's how.

By Paul Sutter Published

Some interpretations of quantum mechanics propose that our entire universe is described by a single universal wave function that constantly splits and multiplies.

Astronomy
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