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Our Expert Voices conversation on space.

There's an obvious connection between how far away I am from something and the degree to which that thing can physically affect me. A rhinoceros, or an explosion, or a tornado, or what have you, is more dangerous to me the closer it is to me, and less dangerous to me the farther away it is from me. And we usually explain this to ourselves by saying that a distant explosion is less dangerous to me than a near one because the effects of a distant explosion have more space to cross, before they get to me, than the effects of a near one do.

New idea: With increasing excitement and intensity over the past 20 years or so, the following thought has occurred to scientists and philosophers: Maybe there is a way of eliminating the middleman here. We're used to thinking of the 'distances' between things as something that helps explain why some things affect one another a lot and others affect one another less – but maybe that's all backwards: maybe there's a way of thinking about the distances between things as nothing more than a measure of how much they affect one another!

Bottom line: Maybe the world, at its most fundamental level, is just this formless void in which things float, and affect one another – a void in which there is no distance, and no geometry, and no space – and that all the talk about distance and geometry and space is really just a way of keeping track of how those things affect one another.

Other voices in the conversation:

Sean Carroll, theoretical physicist, California Institute of Technology: Space is overrated

Izabella Laba, mathematician, University of British Columbia: We can work with space without understanding its essence

Bridget Falck, astrophysicist, University of Oslo: Space is a relation between things, not a thing itself

Go deeper

Dan Primack, author of Pro Rata
10 hours ago - Technology

TikTok gets more time (again)

Illustration: Aïda Amer/Axios

The White House is again giving TikTok's Chinese parent company more to satisfy national security concerns, rather than initiating legal action, a source familiar with the situation tells Axios.

The state of play: China's ByteDance had until Friday to resolve issues raised by the Committee on Foreign Investment in the U.S. (CFIUS), which is chaired by Treasury secretary Steve Mnuchin. This was the company's third deadline, with CFIUS having provided two earlier extensions.

Federal judge orders Trump administration to restore DACA

DACA recipients and their supporters rally outside the U.S. Supreme Court on June 18. Photo: Drew Angerer via Getty

A federal judge on Friday ordered the Trump administration to fully restore the Deferred Action for Childhood Arrivals program, giving undocumented immigrants who arrived in the U.S. as children a chance to petition for protection from deportation.

Why it matters: DACA was implemented under former President Obama, but President Trump has sought to undo the program since taking office. Friday’s ruling will require Department of Homeland Security officers to begin accepting applications starting Monday and guarantee that work permits are valid for two years.

Updated 12 hours ago - Politics & Policy

Coronavirus dashboard

Illustration: Aïda Amer/Axios

  1. Politics: Fauci says he accepted Biden's offer to be chief medical adviser "on the spot" — The recovery needs rocket fuel.
  2. Health: CDC: It's time for "universal face mask use" — Death rates rising across the country — Study: Increased testing can reduce transmission.
  3. Economy: U.S. economy adds 245,000 jobs in November as recovery slows — America's hidden depression: K-shaped recovery threatens Biden administration.
  4. Cities: Bay Area counties to enact stay-at-home order ahead of state mandate
  5. Vaccine: What vaccine trials still need to do.
  6. World: UN warns "2021 is literally going to be catastrophic"
  7. 🎧 Podcast: Former FDA chief Rob Califf on the vaccine approval process.