# A black bear's heart drops from roughly 55 beats per minute to as few as 8 during hibernation, yet it emerges in spring with almost no muscle or bone loss: a biological trick space agencies are studying to protect astronauts on long missions

> **Newsylist Open Intelligence Dossier** · First detected: 2026-07-23 00:29 UTC · Category: Science · Sources: 5 · Current Velocity: 2.8

## Executive Summary
5 news sources are covering this Science story right now — Newsylist is tracking how fast it spreads.

## Intelligence Brief
"A black bear's heart drops from roughly 55 beats per minute to as few as 8 during hibernation, yet it emerges in spring with almost no muscle or bone loss: a biological trick space agencies are studying to protect astronauts on long missions" is generating significant coverage in the Science category, with 5 articles from 5 distinct sources tracked by Newsylist so far.


Outlets currently covering the story include 동아사이언스, The Times of India, srilanka.factcrescendo.com and The Guardian. Newsylist measures a story's velocity from how quickly new articles appear and how many independent newsrooms join the coverage.


Synthesized from multi-source international reporting and live coverage telemetry under Newsylist open intelligence methodology.

## Verified Facts & Key Claims
### Why is "A black bear's heart drops from roughly 55 beats per minute to as few as 8 durin" trending?
Because 5 independent news sources published 5 articles about it in a short window — a coverage burst Newsylist classifies as a trend.

### How does Newsylist measure this trend?
Newsylist scores velocity from the rate of new articles weighted by source diversity, snapshotted hourly. The full method is public on our methodology page.

### Is this trend still active?
The status badge on this page updates hourly: rising, peaking, cooling, or archived once coverage stops for 48 hours.

## Key People, Organizations & Locations
NASA and ESA, NASA Is Not Preparing, Put Astronauts Into Hibernation for Mars Missions

## Multi-Source Evidence Table
| Source Outlet | Headline | Published (UTC) | Verification URL |
|---|---|---|---|
| 동아사이언스 | NASA and ESA scientists advance hibernation research for Mars astronauts | 2026-07-22 06:45 | [Source Link](https://news.google.com/rss/articles/CBMiVEFVX3lxTFBfYWZIc2dmRUliVnI0TDVQa2JSaTNLcWVOVUFCVFJsNFJwOXR1ZDNDbkV6cVdVTjZNcGFrY0ozRURGR1NpbmtESnlYQzhMZ0lUVWQ1Rg?oc=5) |
| The Times of India | Nasa explored putting astronauts into a hibernation-like state for Mars missions, but scientists are still trying to make the science-fiction idea safe for humans | 2026-07-22 06:45 | [Source Link](https://news.google.com/rss/articles/CBMi0AJBVV95cUxPcHVVLXk3RERnVC1tY1R2Q2xZY2F4bmFNTE9MajRaaXdwcWxsbWpjMkhxakY3RjlkVEVTVFdVVHRCbW1WT3pFZ2pUeTR3WXhacllCOWV5SlNUdEhNQVQ1d2ZQdEpPY24yNkt4R2xTaXk0RG02VE5pRUZhOTdJWVF6VkJ1aUV5MW1Nd0JkcS1JS3BiamZpSXh3aHVpQVRZNllPdjZXTEt0TXdQeXBubWdEZDVtaUNuWWJYZWRwMWZRbk5rSnpDYlptejRFdV91NHFHUXNVWTRLQVdFb29fTzdoTU1vdUFnQ0hEd0hIVmNmY2NJTWk0bW96VTZfRVZDYnF1VExHSThjNjhrMWxNMEhaM1g1ZzZyZFNrVDRhUkdDV0I1LXNGOXdXcG1PVGNWRWQ1dEpjVW1CeFVSZWNCdE9yQmlCc1UtYzZySnhTOTRnVVA?oc=5) |
| srilanka.factcrescendo.com | NASA Is Not Preparing to Put Astronauts Into Hibernation for Mars Missions | 2026-07-22 06:45 | [Source Link](https://news.google.com/rss/articles/CBMinwFBVV95cUxOSk9ZaDRFZW9LZHktald3d0NRT0U1aHBXMnJQM0tNTkt6NkJRQm11TDJGWWlnX1JSQ3k3QXlyXzhQSmZvZlZkeVJWUVZiRkkyZ1FNblNYTThZTElrbGlRMlNEeWdPcllxQ01jYTJGSlBXNUZzUzBsclBCZHZ1cEluM1R1eUtOYndha2lrc1FsRFl3T0VEMDQ1M1M2UnNzU1E?oc=5) |
| The Guardian | Can humans hibernate their way to Mars? | 2026-07-22 06:45 | [Source Link](https://news.google.com/rss/articles/CBMilgFBVV95cUxPUjRTLWtpcEotLWkzSjlWbjNSUUtGcTBUT3h3YmloNUw4MzRaWnNOSU00Z3FtQW5rTHlDRGtLSl9NV21MSXRhNHQ1R2w5WWhfTWtOWEVNM0R6ZUtZSDc0YjhROExYLUphMzBoN0Y0VVJHVWtGdEtrWmdBTVpUSTZlWkRzOG8zUVVFOGlDMUFVNVVnLVdVemc?oc=5) |
| Space Daily | A black bear's heart drops from roughly 55 beats per minute to as few as 8 during hibernation, yet it emerges in spring with almost no muscle or bone loss: a biological trick space agencies are studying to protect astronauts on long missions | 2026-07-22 06:45 | [Source Link](https://news.google.com/rss/articles/CBMixgJBVV95cUxNNHE2YjZOeXdWOThieVZmT3JKWERicGhBMDYyTUNrcl9GVkFaM0FwMUprdnFmdGhHc0M2VFhsWjJrbGpRdkpMRDJtZGc5bDhuNDVZcVBzNTg3aHU5S190eWFzOVpEMnJHWHlSbUhrczB1R09rNlZWVDdnMks3MGhEa3hBTXhTMjFHSmt3NUc2WjRaN0tiWXktYWJCSEE2aGpGLWZLd25RZ1lDZW5hbVVSU3lMQUxBUmdCaVhWOWdwRmpHY3VVM3BNTkZtWHBqWFRpSTJsQ2FNZHM5Yll2SUpZRzk0UlpSLXRxTVdkcXJWNWlRMmh1TEx5UmpDNVluYUlqTFg2UWlqMlhkcE1PaS1tRWsybkhObkNad3hZRWNlTm1xbVhpa3p3RnBWUW5IUzlzeDdNRjVoSkZpb0RteEpOU1kxMEVRQQ?oc=5) |

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*Canonical Source: https://www.newsylist.com/trend/2026-07-23/a-black-bear-s-heart-drops-from-roughly-55-beats-per-minute-to-as-few-as-8*
*Synthesized by Newsylist Open Intelligence Engine under E-E-A-T journalistic standards.*