michael16h ago

15-Apr-2026
UNM Astronomers reveal always-changing multi-planet system

https://www.eurekalert.org/news-releases/1123963

#science #astrobiology #exoplanets #planets

UNM Astronomers reveal always-changing multi-planet system

Astronomers at The University of New Mexico have recently published new research confirming three bodies orbiting the dynamic exoplanet system TOI-201. They include a super-earth (TOI-201 d), a warm Jupiter (TOI-201 b) and a brown dwarf (TOI-201 c). Ismael Mireles, a PhD candidate in the UNM Department of Physics and Astronomy advised by Professor Diana Dragomir, led the research. The paper titled, “Uncovering the Rapidly Evolving Orbits of the Dynamic TOI-201 System” is published in Science Advances.

EurekAlert!
michael16h ago

15-Apr-2026
#Planets need more #water to support life than scientists previously thought

https://www.eurekalert.org/news-releases/1124414

#science #astrobiology #exoplanets

Planets need more water to support life than scientists previously thought

In a new study, University of Washington researchers show that an Earth-sized planet likely needs at least 20 to 50% of the water in Earth’s oceans to maintain a critical natural cycle that keeps water on the surface. These new parameters could exclude many exoplanets in the so-called habitable zone.

EurekAlert!
adaddinsane (Steve Turnbull)18h ago
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The Japan Times20h ago
Scientists have now detected what might be the contours of an ancient ocean on Mars, using data collected by a NASA probe that ​orbited the planet for a decade. https://www.japantimes.co.jp/news/2026/04/16/world/science-health/mars-clues-ancient-ocean/?utm_medium=Social&utm_source=mastodon #worldnews #sciencehealth #mars #space #planets
Huge 'bathtub ring' may show contours of ancient ocean on Mars

A new study builds on earlier evidence of a bygone Martian ocean including studies identifying features resembling an ancient shoreline.

The Japan Times
AllanICarswellObservatory2d ago
We are hosting an observatory tour where guests will have a chance to explore the inside of our incredible 1m and 60cm telescope domes.
Bonus: If the skies are clear, we’ll set up our 1m telescope for live observing!
Date: Wednesday, April 15, 2026
Time: 7:30 – 9:30 PM ET
Location: Petrie Science and Engineering Building, 3rd Floor
Tour tickets are free, get yours here: https://www.zeffy.com/en-CA/ticketing/allan-i-carswell-observatory-tour-april-15th--2026


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3i/Atlas2d ago
NASA’s Webb Redefines Dividing Line Between Planets, Stars
https://atlas.whatip.xyz/post.php?slug=nasas-webb-redefines-dividing-line-between-planets-stars
Key insight: <p>Planets
#redefines #dividing #planets #between
NASA’s Webb Redefines Dividing Line Between Planets, Stars

Planets, like those in our solar system, form in a bottom-up process where small bits of rock and ice clump together and grow larger over time. But the heftier the planet, the harder it is to explain ...

Benjamin Carr, Ph.D. 👨🏻‍💻🧬2d ago
A #chemical ‘Goldilocks zone’ may limit which #planets can host #life
Research highlights a narrow chemical balance needed to preserve key nutrients
Elements such as #phosphorus and #nitrogen are crucial to assembling cell walls, encoding genetic information and building proteins, among other roles. Imagining life without these nutrients is a stretch, Walton says. “It’s really hard to come up with what an alternative biology would look like.”
https://www.sciencenews.org/article/chemical-planets-core-life-oxygen
https://archive.ph/RVRQd
A chemical ‘Goldilocks zone’ may limit which planets can host life

Life needs nutrients like nitrogen and phosphorus. But without the right balance of oxygen, these elements get locked away in planets’ cores.

Science News
Metin Seven 🎨3d ago
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AllanICarswellObservatory3d ago
Tune in tonight for a new episode of York Universe LIVE! Join us as we discuss fascinating astronomy history and the latest space news, including the Apollo and Artemis missions!
If weather permits, we’ll have Online Public Viewing where we show you live views from our 1m telescope!
Date: Monday, April 13, 2026
Time: 9:00 – 10:00 PM ET
Location: www.youtube.com/@YorkUObservatory/live

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