Category: 7. Science

  • SpaceX delivers four astronauts to the International Space Station just 15 hours after launch

    SpaceX delivers four astronauts to the International Space Station just 15 hours after launch

    CAPE CANAVERAL, Fla. (AP) — SpaceX delivered a fresh crew to the International Space Station on Saturday, making the trip in a quick 15 hours.

    The four U.S., Russian and Japanese astronauts pulled up in their SpaceX capsule after launching from NASA’s Kennedy Space Center. They will spend at least six months at the orbiting lab, swapping places with colleagues up there since March. SpaceX will bring those four back as early as Wednesday.

    Moving in are NASA’s Zena Cardman and Mike Fincke, Japan’s Kimiya Yui and Russia’s Oleg Platonov — each of whom had been originally assigned to other missions. “Hello, space station!” Fincke radioed as soon as the capsule docked high above the South Pacific.

    Cardman and another astronaut were pulled from a SpaceX flight last year to make room for NASA’s two stuck astronauts, Boeing Starliner test pilots Butch Wilmore and Suni Williams, whose space station stay went from one week to more than nine months. Fincke and Yui had been training for the next Starliner mission. But with Starliner grounded by thruster and other problems until 2026, the two switched to SpaceX.

    Platonov was bumped from the Soyuz launch lineup a couple of years ago because of an undisclosed illness.

    Their arrival temporarily puts the space station population at 11. The astronauts greeting them had cold drinks and hot food waiting for them.

    While their taxi flight was speedy by U.S. standards, the Russians hold the record for the fastest trip to the space station — a lightning-fast three hours.

    ___

    The Associated Press Health and Science Department receives support from the Howard Hughes Medical Institute’s Department of Science Education and the Robert Wood Johnson Foundation. The AP is solely responsible for all content.

    Marcia Dunn, The Associated Press

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  • Astronauts take express flight to the space station, arriving 15 hours after their launch – The Washington Post

    1. Astronauts take express flight to the space station, arriving 15 hours after their launch  The Washington Post
    2. Watch: SpaceX and Nasa launch crew headed to the ISS  BBC
    3. NASA Sets Coverage for Agency’s SpaceX Crew-11 Launch, Docking  NASA (.gov)
    4. Eat, sleep, explore space, repeat  The Planetary Society
    5. SpaceX Delivers Four Astronauts to the International Space Station Just 15 Hours After Launch  U.S. News & World Report

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  • Underrated bedding plants – the 8 choices experts say you need

    Underrated bedding plants – the 8 choices experts say you need

    Opting for more unusual and often underrated bedding plants is a way of giving your garden long-lasting color and interest. In many cases, it’s possible to choose repeat performers that will come back year after year, as well as varieties that will beautifully fill out beds, borders and containers all summer long.

    Traditional annual bedding plants are designed to give an instant off-the-shelf fix to borders and container gardens. They come in a range of showy colors that lift the garden such as intense pink petunias, scarlet geraniums, and coral begonias. The downside is these high maintenance plants need regular watering, feeding and deadheading.


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  • The bizarre blue blood of a prehistoric-looking ‘living fossil’ has saved millions of human lives – here’s how it works

    The bizarre blue blood of a prehistoric-looking ‘living fossil’ has saved millions of human lives – here’s how it works

    Beyond their odd appearance and ancient history, there is another thing that makes horseshoe crabs stand out from the crowd: their bright blue blood.

    The blue colour is caused by the protein haemocyanin, which is their equivalent of haemoglobin (the molecule that carries oxygen in human blood). Rather than being iron-based, as haemoglobin is, haemocyanin is copper-based.

    When the blood is oxygenated, the copper means it takes on a blue appearance – but little or no colour when it’s not exposed to oxygen.

    Horseshoe crabs aren’t the only animals with blue blood. Molluscs including octopuses, squids and snails, and arthropods such as scorpions, lobsters and crabs are blue-blooded for the same reason.

    But there’s something else special about horseshoe crab blood: it contains cells that clot in the presence of toxic bacteria. A protein extracted from these cells is used to check that vaccines aren’t contaminated, meaning that horseshoe crabs have likely saved millions of humans from illness.

    A synthetic molecule that does the same job was created by researchers in the late 1990s and is now starting to take over these vaccine safety tests.

    More amazing stories from around the world

    Top image: a gathering of horseshoe crabs on a beach. Credit: Getty

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  • Scientists discover that tomato is the 'mother' of potato – news.cgtn.com

    Scientists discover that tomato is the 'mother' of potato – news.cgtn.com

    1. Scientists discover that tomato is the ‘mother’ of potato  news.cgtn.com
    2. Potato evolved from tomato 9 million years ago  EurekAlert!
    3. The mystery of the first potatoes has finally been solved – and a tomato was involved  MSN
    4. Family roots: potatoes evolved from tomatoes, study reveals …Tech & Science Daily podcast  Yahoo Home
    5. Scientists discover that tomato is ‘mother’ of potato  China Daily – Global Edition

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  • NASA’s SpaceX Crew-11 Mission Sends Four People to ISS – MSN

    1. NASA’s SpaceX Crew-11 Mission Sends Four People to ISS  MSN
    2. Watch: SpaceX and Nasa launch crew headed to the ISS  BBC
    3. NASA Sets Coverage for Agency’s SpaceX Crew-11 Launch, Docking  NASA (.gov)
    4. Eat, sleep, explore space, repeat  The Planetary Society
    5. When science lifts us: an intimate and planetary look at the CREW-11 launch  Pressenza – International Press Agency

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  • How did the tomato create the potato? Chinese scientists trace tuber’s hybrid past

    How did the tomato create the potato? Chinese scientists trace tuber’s hybrid past

    They could not look less alike in the supermarket aisle, but a Chinese-led research team has uncovered an ancient link that makes a forerunner of the tomato a genetic parent of the potato.
    By examining genomes and data sets from cultivated and wild potato species, the scientists traced the tuberous plant’s evolution back about nine million years to a moment when a tomato ancestor created a hybrid with a group of potato-like – but tuberless – plants called etuberosum. They published their findings in the journal Cell on Thursday.

    All varieties of potato have underground tubers, but until now it has not been clear how they developed them and diversified.

    The researchers concluded that hybridisation was a key driver of the development of tubers – the part of the potato that makes it a staple crop today.
    “We not only show that the cultivated potato and its 107 wild relatives are derived from an ancient hybrid speciation event, but also that tuber formation itself, a key innovative trait, has a hybrid ancestry,” the team said in the paper.

    The potato is the third most widely consumed food crop globally, after rice and wheat, and is eaten by over 1 billion people, according to the United Nations Food and Agriculture Organization.

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  • Webb is giving scientists a view into the formation of black holes at the dawn of the Universe

    Webb is giving scientists a view into the formation of black holes at the dawn of the Universe

    I think one of the most interesting things happening in astrophysics at the minute is the rapid development of new ways to study black holes.

    Whether it’s the virtuoso display of the Event Horizon Telescope showing us the shadow around the Milky Way’s supermassive black hole or the gravitational wave physicists detecting the effects of far-off mergers between stellar-mass black holes, these cosmic enigmas are being scrutinised like never before.

    Credit: X-ray: NASA/CXC/Univ. of Chicago/S.C. Mackey et al.; Radio: NRF/SARAO/MeerKAT; Image Processing: NASA/CXC/SAO/N. Wolk

    Both of these methods tell us about individual black holes.

    Really, though, we want to know about the whole population: when they formed, how they grow and what effect they have on the galaxies that host them.

    One paper shows how the shiny new JWST might be able to help.

    A view of the black hole at the centre of our Galaxy, seen by the Event Horizon Telescope. Credit: EHT Collaboration
    A view of the black hole at the centre of our Galaxy, seen by the Event Horizon Telescope. Credit: EHT Collaboration

    How we find and study black holes

    With black holes being black, spotting the glow from hot material in the accretion disc that surrounds them is how we usually detect them.

    Sometimes that means looking for X-rays, but only the most massive black holes with the hottest discs reliably shine in the highest-energy parts of the spectrum.

    Though sometimes emission from the accretion disc is seen in visible light – and it can outshine the entire rest of the galaxy, appearing as a quasar – dust surrounding the nucleus can often obscure it at these wavelengths.

    Using infrared enables us to punch through any obscuration, and JWST’s giant golden mirrors allow the detection of actively growing black holes that are eight times fainter than any seen with the previous generation of infrared space telescopes.

    It’s also sensitive to a broader range of wavelengths than prior missions, allowing it to spot emission from galaxies at higher redshift, revealing the state of black holes as they were back when the Universe was much younger than it is today.

    An image of the supermassive black hole at the centre of the Milky Way, captured by the MeerKAT radio telescope. Credit: NASA, ESA, CSA, STScI, SARAO, Samuel Crowe (UVA), John Bally (CU), Ruben Fedriani (IAA-CSIC), Ian Heywood (Oxford)
    An image of the supermassive black hole at the centre of the Milky Way, captured by the MeerKAT radio telescope. Credit: NASA, ESA, CSA, STScI, SARAO, Samuel Crowe (UVA), John Bally (CU), Ruben Fedriani (IAA-CSIC), Ian Heywood (Oxford)

    Studying multiple black holes in distant galaxies

    The research paper uses data from the CEERS survey, one of the first sets of deep images taken by JWST.

    Combing through it, the team found 41 galaxies that harbour clearly growing black holes.

    By measuring their brightness at different wavelengths, the researchers were able to work out how much material they’re consuming.

    They then did some fancy statistical footwork to convert this to what’s called a luminosity function – a model that gives us the total amount that the entire population of black holes is growing by as a function of cosmic time.

    A bright flare coming from the supermassive black hole at the centre of our Galaxy, as seen by the James Webb Space Telescope. Credit: Farhad Yusef-Zadeh/Northwestern University
    A bright flare coming from the supermassive black hole at the centre of our Galaxy, as seen by the James Webb Space Telescope. Credit: Farhad Yusef-Zadeh/Northwestern University

    Based only on one survey, and on just 41 galaxies, this is more of a preliminary study than the last word on the subject.

    But the overall story is clear: black hole activity grew from the Universe’s early days, until a period roughly four billion years after the Big Bang, since when it has been declining.

    Intriguingly, this is around the time that astronomers think that star formation peaked in the Universe, so the process of star formation and black hole growth seems to have been evolving together.

    Future surveys will tell us whether that’s because one controls the other – or whether some other factor is driving both.

    Chris Lintott was reading Inferring Obscured Cosmic Black Hole Accretion History from AGN Found by JWST/MIRI CEERS Survey by C-A Hsieh et al. Read it online at arxiv.org/abs/2505.24308.

    This article appeared in the August 2025 issue of BBC Sky at Night Magazine

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  • Proud homeowner shares breathtaking before-and-after photos of stunning yard transformation: ‘A labor of love’

    Proud homeowner shares breathtaking before-and-after photos of stunning yard transformation: ‘A labor of love’

    Consistent effort over time toward a clear goal can yield truly transformational results. We hear this all the time, but it’s something else entirely to see it with our own eyes.

    One homeowner shared their journey on the subreddit r/f***lawns, revealing a jaw-dropping transformation from a plain, monoculture grass lawn in 2018 to a thriving, certified wildlife habitat in 2025.

    Photo Credit: Reddit
    "That's absolutely gorgeous."
    Photo Credit: Reddit

    The before-and-after photos are almost unrecognizable, proof of what patience, vision, and a little rebellion against conventional landscaping can achieve.

    The homeowner shared, “It’s been a labor of love involving a lot of literal blood, sweat, and tears…and so worth it.”

    Transforming a traditional monoculture grass lawn into a native or resource-saving alternative offers significant personal benefits, notably, saving money by drastically reducing water usage and the need for expensive fertilizers or pesticides.

    Homeowners also save valuable time and energy since native plants typically require less mowing and general upkeep than conventional lawns.







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    Beyond these personal advantages, such transformations contribute positively to the environment by supporting local biodiversity, improving soil health, and reducing chemical runoff, making them a win-win for both people and the planet.

    Native lawns create a healthier ecosystem for pollinators, which are essential allies in protecting our food supply. Homeowners have their pick of eco-friendly, low-maintenance alternatives to monoculture grass lawns, like native plants, clover, buffalo grass, and xeriscaping.

    Even just replacing part of a traditional lawn with these options allows them to enjoy these environmental and personal benefits.

    The homeowner shared how they began their yard transformation, demonstrating how a few simple steps can get you started.

    They explained, “It’s pretty simple … I laid the cardboard over the grass … then spread a layer of compost/dirt … then put a layer of mulch.”

    From there, the homeowner continued to detail the rest of their process.

    The comments were overwhelmingly positive.

    One said, “This makes me feel optimistic.”

    Another echoed the sentiment: “This is amazing — I know how much work that would have been, and I salute you.”

    Another commenter gushed, “That’s absolutely gorgeous!”

    While some commenters brought up the presence of non-native oxeye daisies, the homeowner acknowledged that they are aware of the concern and are keeping a close eye on their yard to ensure the daisies don’t spread.

    Join our free newsletter for easy tips to save more and waste less, and don’t miss this cool list of easy ways to help yourself while helping the planet.


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  • Mars slips past Beta Virginis

    Mars slips past Beta Virginis

    Look west after sunset to spot the Red Planet forming a wide double with Virgo’s 4th-magnitude beta star, Zavijava.

    • Mars is currently visible in the western sky after sunset, at its faintest apparent magnitude (1.6) for the year, due to its approaching solar conjunction.
    • On this particular night, Mars is situated approximately 8 arcminutes southeast of Beta Virginis (Zavijava), offering a close visual pairing observable with binoculars or a telescope.
    • The distance to Mars is approximately 197 million miles, contrasting with Zavijava’s distance of 36 light-years.
    • Zavijava, described as a Sun-like star, possesses roughly 25% more mass, is slightly less than twice the width, and exhibits about 3.5 times the brightness of our Sun.

    Mars is now moving through Virgo, sitting low in the western sky after sunset. Shining at magnitude 1.6, the planet is at its faintest for the year; in the coming months, it will slowly start brightening again, but with a price. It’s now closing in on the Sun from our point of view, heading for solar conjunction early next year. It will remain visible only until about mid-November before it drops entirely from view. 

    Tonight, though, the Red Planet is still some 10° high an hour after sunset. It is passing close to 4th-magnitude Beta (β) Virginis, also called Zavijava, and today Mars stands just 8′ southeast of this star. They are readily visible together in binoculars or a telescope, presenting a nice contrast between the star’s pinpoint white glow and the planet’s ruddy, 4”-wide disk. Mars is too far from us to really see surface features, as it is now some 197 million miles (317 million km) away. But compare that with Zavijava, a relatively nearby star, which sits 36 light-years distant.

    According to stellar expert Jim Kaler, Zavijava is a relatively Sun-like star with about a quarter more mass than our Sun. It is a little less than twice as wide and about 3.5 times as bright as our star. 

    Sunrise: 6:00 A.M.
    Sunset: 8:12 P.M.
    Moonrise: 3:06 P.M.
    Moonset: —
    Moon Phase: Waxing gibbous (61%)
    *Times for sunrise, sunset, moonrise, and moonset are given in local time from 40° N 90° W. The Moon’s illumination is given at 12 P.M. local time from the same location.

    For a look ahead at more upcoming sky events, check out our full Sky This Week column. 

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