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Minuteman 3 intercontinental ballistic missile launches during an operational test from Vandenberg Air Force Base, Calif. Photo: Senior Airman Ian Dudley/U.S. Air Force via AP

I spent two days last week traveling with Defense Secretary James Mattis. The most memorable moment: inside Cheyenne Mountain, a Cold War-era fortress dug into the Rocky Mountains, and built to withstand nuclear attacks.

But the most illuminating session happened inside the Peterson Air Force Base, the hub for monitoring threats to the homeland. Colonel Todd Moore, who commands the 21st Space Wing, and his colleagues, told us about the escalating military space battle with China.

As one officer put it to us: America's superiority in space is why the 170 pound U.S. solider in Afghanistan is so much more lethal than the 170 pound enemy soldier he faces. The American soldier can look down at a screen and see the enemy on the other side of the mountain. The U.S. military has so much more information than its adversaries — provided by satellites, GPS, and other sophisticated systems.

Why this matters: A senior military officer summed it up in his briefing: "Our adversaries see space as a potential war fighting domain" and while Russia has always understood the importance of space, "it's really China that's growing incredibly [fast]."

What's next: America's adversaries are rapidly developing their military space capabilities. China is determined to dominate space, and is investing gobsmacking amounts of money to get the edge on the U.S. In 2007, China tested its first anti-satellite weapon, and its military space capabilities have grown substantially since then. These concerns will grow ever-louder as the Pentagon fights for a larger budget.

Go deeper

Omicron cases confirmed in 4 U.S. states

A healthcare worker inserts a Covid-19 rapid test into a machine in Denver, Colorado. Photo: Daniel Brenner/Bloomberg via Getty Images

Five cases of the newly-discovered Omicron variant were detected in New York, Gov. Kathy Hochul (D) and New York City Mayor Bill de Blasio announced on Thursday, making New York the fourth state with confirmed cases.

The latest: In addition to New York, the variant has been confirmed in California, Colorado and Minnesota.

Early winter heat shatters records in U.S., Canada

Temperature departures from average on Dec. 2, 2021, as depicted by the GFS computer model. (Weatherbell.com)

A widespread and intense heatwave is roasting large portions of the U.S. and Canada, shattering daily and monthly temperature records.

Why it matters: Winter is the fastest-warming season across the U.S., and the lingering warmth is shortening the snow season in places like Colorado and Montana, where mountain snowpack is a critical source of water during the summer months.

5 hours ago - Science

COVID time warp

Illustration: Sarah Grillo/Axios

The start of the COVID-19 pandemic seems like a lifetime ago to some, and just yesterday to others. Scientists are beginning to unpack the way people processed the passage of time amidst the stress, uncertainty and isolation of the 1 year, 8 months and 21 days since WHO declared a pandemic.

Why it matters: The pandemic's global effects on how people experience time could provide new insights into the brain's ability to perceive and predict time — a fundamental feature of life.