One of the top priorities for new home buyers is location. Finding a home in the right neighborhood is a key ingredient for a happy, prosperous family.
Like families hunting for a house, fledgling planets also need the proper location to grow and thrive. Astronomers using Hubble to probe the giant, young star cluster Westerlund 2 are finding that stars residing in the system's crowded central city face a rough-and-tumble neighborhood that suppresses planet formation.
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Why astronomers now doubt there's a Planet Nine | Space | EarthSky
In the search for the hypothetical 9th planet in our solar system, these scientists may have uncovered another explanation for the patterns in the orbits of Kuiper Belt objects.
An artist's concept of a hypothetical planet with a distant sun. Image via Shutterstock/ The Conversation .
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Planet Nine is a theoretical, undiscovered giant planet in the mysterious far reaches of our solar system.
The presence of Planet Nine has been hypothesized to explain everything from the tilt of the sun's spin axis to the apparent clustering in the orbits of small, icy asteroids beyond Neptune.
Breathtaking New Images Show What Could Be The Turbulent Birth of a Giant Planet
A swirling, twisted cloud of dust and gas over 530 light-years away isn't just a tumultuous wonder. It's a new piece of the puzzle as to how planets grow from tiny grains to giant globes.
Astronomers have obtained breathtaking new near-infrared images of the protoplanetary disc around the young star AB Aurigae. These images show spiraling disturbances the researchers believe are caused by planets coming together from the dust.
"In the early stage of planet formation, hydrodynamical simulations indicate that the accretion process generates at the planet location an inner and outer spiral pattern due to Lindblad resonances induced by disc-planet interactions," the researchers wrote in their paper .
Skywatch: Some asteroids share planets' orbits | Outdoors | magicvalley.com
On Jan. 1, 1801, Sicilian astronomer Giuseppe Piazzi discovered Ceres, the first known asteroid. For the next 105 years, each subsequent asteroid — 587 in all — was found to orbit no further from the sun than the Main Belt between Mars and Jupiter. Number 588, found by German astronomy Max Wolf, orbited not only completely outside the Main Belt, but shared Jupiter's orbit.
Named (588) Achilles, it was the first known "Trojan" asteroid, predicted 134 years earlier by French mathematician Joseph-Louis Lagrange. Lagrange calculated that leading and trailing planets by 60 degrees are points where the gravitational forces of the sun and the planet would be balanced by centrifugal force. Any small body near these "Lagrangian points" could oscillate about them indefinitely.
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Banish Mercury Off the Planet
HARDI is the largest and most successful trade association representing HVACR distributors in the United States .
"Despite the impact of the coronavirus on our industry, TRC's partners continue to demonstrate dedication at collecting mercury-containing thermostats," said Danielle Myers , Operations and Compliance Manager, TRC. "While collections have dipped, we know that HARDI wholesalers are committed to keeping our environment safe."
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HARDI members need not sign up to enter the contest. All they must do is return thermostats collected through the bins that TRC places in HARDI wholesale member branches throughout the United States .
Astronomers Are Now Disagreeing Over Those Epic 'New Planet Birth' Images
A swirl spotted in the turbulent disc of dust encircling a young star called AB Aurigae was revealed last week in high resolution , and to much fanfare in the astronomy community. Such a distinctive disturbance, researchers suggested, could be the signature of a baby exoplanet in the process of forming.
Although this baby exoplanet was widely reported by many outlets as an unquestionable interpretation of the data, that 'could' is key. Now, a new paper neatly demonstrates why: a separate team of researchers has found that the swirling dust could be caused by a different object – a forming star, a binary companion to AB Aurigae.
Astronomers Confirm The Earth-Sized Planet at Proxima Centauri Is Definitely There
Using state-of-the-art astronomical instruments, an international team of researchers has confirmed the existence of Proxima b , an Earth-like planet that's orbiting the closest star to our Solar System, Proxima Centauri .
"Confirming the existence of Proxima b was an important task, and it's one of the most interesting planets known in the solar neighborhood," Alejandro Suarez Mascareño, lead author of a paper about the research accepted for publication in the journal Astronomy & Astrophysics , said in a statement .
Planet walk puts things in perspective | News | anchoragepress.com
Space physics expert Peter Delamere at the start of the new UAF Planet Walk in Fairbanks. Photo by Ned Rozell.
It is a pleasant day for a walk in middle Alaska, with blue sky overhead, and people perhaps looking for something to do outside, with lots of space and sweet-scented summer air around them.
Not long ago, I hiked the length of a new planet-walk display on the University of Alaska Fairbanks campus with Peter Delamere. In a little less than one mile, we spanned the relative distance from the sun to dwarf planet Pluto.
Happening on Twitter
In planet formation, it's all about location, location, location. Astronomers discover that the rough-and-tumble r… https://t.co/EiKfkubbMW NASA Thu May 28 22:32:01 +0000 2020
The heart of star cluster Westerlund 2 isn't a great place to make a planet. 🪐 Planet-forming clouds of dust around… https://t.co/uCpnuLhKwi NASAHubble (from Goddard Space Flight Center) Thu May 28 17:16:02 +0000 2020
How do planets go from dust clouds to fully formed worlds? Location, location, location (and time, lots of time).… https://t.co/ZmSNbY8ll7 NASAExoplanets (from Beyond) Thu May 28 19:04:45 +0000 2020
Astronomers have snapped an incredible new image of a planet being born in a swirl of gas and dust. https://t.co/Z2Z1SU8liK techreview (from Cambridge, MA) Thu May 28 08:20:35 +0000 2020
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