Friday, November 15, 2024

Space & Physics: Are we in the "darkest timeline?"

November 14 — This week's top stories include a meditation on the physics of "darkest timelines," an interview with an especially overachieving NASA astronaut, a celebration of the Martian New Year, and more. Enjoy!

--Lee Billings, Senior Editor, Space and Physics


The multiverse offers no escape from our reality—which might be a very good thing

On the morning of November 6, the day after Donald Trump had been reelected as President of the United States, the phrase "darkest timeline" trended for a few hours in Google searches. People around the world—and many feeling especially blue from Trump's "red wave" of voter support—were seemingly questioning some core tenets of reality. Could a "darkest timeline" really exist alongside our own—and might we actually be in it? Or could there be some other branch of the notional multiverse in which the electoral outcome had been different—and if so, could anyone disgruntled with our own plane of existence swap over to it?

Far from being a mere minor internet meme, the notion of a "darkest timeline" cuts deep to the core of multiple interpretations of quantum mechanics, and even to the application of quantum effects in computers, communications and biology itself. So here at Scientific American we decided to unpack all that, offering if nothing else a bit of erudite distraction from the ongoing chaos of U.S. politics.

Our top story this week, by contributing editor George Musser, delves into some of the science and philosophy behind speculations about the multiverse. Yes, Musser writes, alternate timelines almost certainly exist—but our current understanding of physics offers no way of reaching them. And that, he argues, may be to our great benefit. --Lee Billings

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Top Stories
This 'Human Computer' Created a System for Measuring Vast Distances in Our Universe

Visual artist Anna Von Mertens looks to astronomer Henrietta Swan Leavitt and her vision of the universe for inspiration

NASA Astronaut Jonny Kim Is a Rarity among Rarities

Jonny Kim—a former Navy SEAL and ER doctor—is now a NASA astronaut who will soon launch to the International Space Station as flight engineer for the crew of Expedition 72/73

How Geometry Revealed Quantum Memory

The unexpected discovery of a geometric phase shows how math and physics are tightly intertwined

Happy New Year! (If You're a Martian)

The Martian new year arrives with the Red Planet's vernal equinox. Explaining why requires a deep dive into celestial mechanics and Earth's calendrical history

Mud Bath Really Does Make Baseballs Easier to Grip

Droughts in 48 of 50 U.S. states, evidence of microplastics mucking up wastewater recycling and the science of a baseball mud bath in this week's news roundup.

Consciousness Might Hide in Our Brain's Electric Fields

A mysterious electromagnetic mechanism may be more important than the firing of neurons in our brain to explain our awareness

How I Overcame Solastalgia

Damage to your environment can bring a profound sense of loss; that feeling, called solastalgia, can also provide inspiration

What We're Reading
  • What's in store for U.S. space policy in the aftermath of the 2024 election? | Ars Technica
  • NASA's famed Jet Propulsion Laboratory is short on cash and laying off more workers—again. | Space News
  • This is how Elon Musk rebranded President-elect Donald Trump. | The New Yorker

From the Archive
Nil Communication: How to Send a Message without Sending Anything at All

Physicists have exploited the laws of quantum mechanics to send information without transmitting a signal. But have they, really?

Scientist Pankaj

Today in Science: Humans think unbelievably slowly

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