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Artist's concept of an intermediate-mass black hole. Photo: NASA/JPL-Caltech

Scientists may need to cast a wide net, searching across a range of frequencies in order to find never-before-observed intermediate-mass black holes if they crash together in deep space, according to a study in Nature Astronomy this week.

Why it matters: Intermediate-mass black holes — those that are 100–100,000 times the mass of the Sun — represent a gap in humanity's understanding of the universe and could be key to figuring out just how our cosmos evolved over time.

What they found: LIGO can, in theory, pick up ripples in space-time from intermediate-mass black holes today, but according to the new study, it will take future detectors to get a more complete view of the mysterious objects.

  • The space-based LISA observatory — which is expected to launch in the 2030s — will be able to search for those gravitational waves at lower frequencies than LIGO.
  • That range of frequencies between the instruments will allow scientists on the ground to observe these types of black holes and others as they spiral in toward each other for extended periods of time before merging.
  • "If LISA sees it, that means it is going to appear in LIGO's [frequency] band four years later," Karan Jani, an author of the new study, told Axios.

What's next: New ground-based observatories could also help scientists parse signal from noise and find direct evidence if these types of black holes exist.

  • Scientists aren’t just looking for these types of black holes through gravitational waves, either. Astronomers have found a number of candidate intermediate-mass black holes through X-ray signatures as well.

Go deeper:

Go deeper

N.Y. Times faces culture clashes as business booms

Illustration: Sarah Grillo/Axios

New York Times columnist David Brooks' resignation from a paid gig at a think tank on Saturday is the latest in a flurry of scandals that America's biggest and most successful newspaper company has endured in the past year.

Driving the news: Brooks resigned from the Aspen Institute following a BuzzFeed News investigation that uncovered conflicts of interest between his reporting and money he accepted from corporate donors for a project called "Weave" that he worked on at the nonprofit.

America rebalances its post-Trump news diet

Illustration: Annelise Capossela/Axios

Nearly halfway through President Biden's first 100 days, data shows that Americans are learning to wean themselves off of news — and especially politics.

Why it matters: The departure of former President Trump's once-ubiquitous presence in the news cycle has reoriented the country's attention.

2021 sees a record number of bills targeting trans youth

Illustration: Annelise Capossela/Axios

Republicans in at least 25 states have introduced over 60 bills targeting transgender children — a legislative boom since January that has beaten 2020's total number of anti-trans bills.

Why it matters: LGBTQ advocates say the unprecedented push was catalyzed by backlash to Biden's election and the Supreme Court ruling that workers cannot be fired for being gay or transgender.