science

Starburst Galaxy Messier 94

Beautiful island universe Messier 94 lies a mere 15 million light-years distant in the northern constellation of the hunting dogs, Canes Venatici. A popular target for earth-based astronomers, the face-on spiral galaxy is about 30,000 light-years across, with spiral arms sweeping through the outskirts of its broad disk.

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cross-posted from: https://lemmy.world/post/26370170

Now, a new study that will be presented at the American Academy of Neurology’s 77th Annual Meeting in early April 2025 provides further evidence of a link between more exercise with less risk of developing certain neuropsychiatric diseases.

cross-posted from: https://lemmy.dbzer0.com/post/39179160

Summary

Scientists at Colossal Biosciences have genetically modified mice to develop woolly hair, a step toward engineering Asian elephants with woolly mammoth traits.

Using genome editing, they altered fertilized mouse eggs and embryonic stem cells before implanting them into surrogates.

They disrupted nine genes linked to hair color, texture, and growth, producing mice with long, golden-brown coats but no confirmed cold tolerance.

Experts remain skeptical, noting mammoth de-extinction requires more genetic changes and behavioral considerations, with some arguing conservation efforts should take priority.

cross-posted from: https://lemmy.world/post/26326122

New research suggests that certain antidepressants can accelerate cognitive decline in people with dementia. At the same time, some drugs appear to be less harmful than others, which can help doctors make better treatment decisions, according to the study.

Semen Quality Linked to Longer Lifespan in Men

https://biohackers.media/semen-quality-linked-to-longer-lifespan-in-men

Study links men's semen quality to increased lifespan, with over 120 million motile sperm correlating to 2-3 years longer life expectancy.

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A Quadruple Alignment over Italy

Why does this Moon look so unusual? A key reason is its vivid red color. The color is caused by the deflection of blue light by Earth's atmosphere -- the same reason that the daytime sky appears blue. The Moon also appears unusually distorted. Its strange structuring is an optical effect arising from layers in the Earth's atmosphere that refract light differently due to sudden differences in temperature or pressure.

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Lunar Space Weathering and Water Discoveries Unveiled

https://blog.joshuniverse.com/lunar-space-weathering-and-water-discoveries-unveiled

Explore space weathering's role in lunar water formation and astronaut safety in recent Georgia Tech research on Apollo samples.

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Lunar Research: Protecting Astronauts, Unveiling Water Origins

https://blog.joshuniverse.com/lunar-research-protecting-astronauts-unveiling-water-origins

Study of lunar samples reveals space weathering impacts and origins of water, aiding astronaut safety for future moon missions.

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Seven Sisters versus California

https://apod.nasa.gov/apod/image/2503/California2Pleiades_Anderson_960.jpg

On the right, dressed in blue, is the Pleiades. Also known as the Seven Sisters and M45, the Pleiades is one of the brightest and most easily visible open clusters on the sky. The Pleiades contains over 3,000 stars, is about 400 light years away, and only 13 light years across. Surrounding the stars is a spectacular blue reflection nebula made of fine dust. A common legend is that one of the brighter stars faded since the cluster was named. On the left, shining in red, is the California Nebula. Named for its shape, the California Nebula is much dimmer and hence harder to see than the Pleiades. Also known as NGC 1499, this mass of red glowing hydrogen gas is about 1,500 light years away. Although about 25 full moons could fit between them, the featured wide angle, deep field image composite has captured them both. A careful inspection of the deep image will also reveal the star forming region IC 348 and the molecular cloud LBN 777 (the Baby Eagle Nebula). Jump Around the Universe: Random APOD Generator

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A recent preprint, “Immunological and Antigenic Signatures Associated with Chronic Illnesses after COVID-19 Vaccination” has fueled anti-COVID-19 vaccine rhetoric. It is being circulated by anti-vaccine advocates as proof that COVID-19 vaccines cause immunodeficiency and therefore, their claims for the past 5 years are validated.

Interesting insight on stem cell evolution in mice compared to humans... View my writeup here:

https://biohackers.media/blood-stem-cell-evolution-human-vs-mouse-insights/

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Blue Ghost on the Moon

There's a new lander on the Moon. Yesterday Firefly Aerospace's Blue Ghost executed the first-ever successful commercial lunar landing. During its planned 60-day mission, Blue Ghost will deploy several NASA-commissioned scientific instruments, including PlanetVac which captures lunar dust after creating a small whirlwind of gas.

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A study involving over 3,000 participants – both patients and clinicians – found that these misdiagnoses (sometimes termed “in your head” by patients) were often associated with long term impacts on patients’ physical health and wellbeing and damaged trust in healthcare services.

More than 80% said it had damaged their self-worth and 72% of patients reported that the misdiagnosis still upset them, often even decades later. Misdiagnosed patients also reported lower levels of satisfaction with every aspect of medical care and were more likely to distrust doctors, downplay their symptoms, and avoid healthcare services. As one patient reported, it “has damaged my trust and courage in telling doctors very much. I even stopped taking my immunosuppressive medicine because of those words”.

Following these types of misdiagnoses, patients often then blamed themselves for their condition, as one individual described: “I don’t deserve help because this is a disease I’ve brought on myself. You go back to those initial diagnosis, you’ve always got their voices in your head, saying you’re doing this to yourself. You just can’t ever shake that. I’ve tried so hard.”

One patient described the traumatising response their doctor’s judgement had on them: “When a rheumatologist dismissed me I was already suicidal, this just threw me over the edge. Thankfully I am terrible at killing myself, it’s so much more challenging than you think. But the dreadful dismissiveness of doctors when you have a bizarre collection of symptoms is traumatizing and you start to believe them, that it’s all in your head.”

Firefly Aerospace's Blue Ghost lander beamed back views of Earth and more from the lunar surface after its historic landing.