Showing posts with label science. Show all posts
Showing posts with label science. Show all posts

Friday, October 23, 2026

White Dwarfs Are Actually…Yellow, Green, Pink, and Purple?

Artist’s illustration of a white dwarf appearing greenish from the sodium-rich planetary debris that enriches its atmosphere. (Credit: Mark A Garlick/University of Warwick)

The universe hosts a myriad of star types, including supergiants, giants, main sequence, red dwarfs, brown dwarfs, white dwarfs, and neutron stars. What makes these stars stand out are just their sizes, but their colors, as each one hosts a distinct color based on their surface temperature, specifically orange, red, blue, and white based on cooler to hotter temperatures. While the correlation between star colors and surface temperatures has long been known throughout astronomy, what if star colors could change based on specific criteria, including their atmosphere?



27 Exoplanet Targets for the World's First Private Space Telescope

An artist's illustration of 55 Cancri d, an exoplanet notable for being a Jupiter analog. It's one of the planets on a list of 27 targets for the Lazuli Space Telescope. It'll be the world's first private space telescope, and will use a coronagraph to image exoplanets. It's scheduled for a 2029 launch. Image Credit: NASA

Get ready for the age of private space telescopes. The Lazuli Space Telescope will launch in a few years and part of its mission is to observe exoplanets. New research presents a list of 27 exoplanet targets, some of which are very well-known and will certainly benefit from deeper observations.



The Largest Canyon in the Solar System is Still Tectonically Active

Artist's impression of the Valles Marineris canyon system on Mars. Credit: Mark Garlick/Science Photo Library

Scientists at Imperial College London and Columbia University have found that the largest canyon system in the solar system is still active and shaping Mars today, billions of years after it first formed.



Saudi Arabia Joins the Search for Alien Civilizations

Saudi Arabia has installed a pair of LaserSETI detectors in a region in a region named AlUla Manara, a site being established as the kingdom's first major astronomical observatory. They're part of a network of optical detectors will scan the heavens for laser signals from alien technological civilizations. Image Credit: LaserSETI.

Saudi Arabia is joining the search for alien signals coming from the cosmos. They're collaborating with SETI in the endeavour. SETI has announced that two LaserSETI instruments will be positioned in Saudi Arabia, adding to a growing network of optical sensors designed to detect laser pulses that could come from alien technological civilizations.



Thursday, October 22, 2026

Advancing Astronomy at MIT with X-ray Reverberation Mapping

Artist's concept of a supermassive black hole with an accretion disk and a relativistic jet. Credit: NASA

Professor Erin Kara of MIT's Kavli Institute for Astrophysics and Space Research is helping advance our understanding of the most extreme objects in the Universe by analyzing X-ray reverberations and other astrophysical data.



Even the Rubin's Test Camera Produces Stunning Images

IC 2177, or the Seagull Nebula, as captured by the Vera Rubin Observatory's Commissioning Camera in 2024. This image features the Seagull's head, a cloud of gas named Sharpless 2-292. Image Credit: NSF–DOE Vera C. Rubin Observatory/NOIRLab/SLAC/AURA. Image Processing: T.A. Rector (University of Alaska Anchorage/NSF NOIRLab), D. de Martin & M. Zamani (NSF NOIRLab)

The Vera Rubin Observatory's Commissioning Camera operated for about 7 weeks in 2024, before the observatory released its well-known first look images. It's an engineering camera, and its job was to test the VRO's equipment and procedures. Now, the VRO has released the ComCam's image of the Seagull nebula. It's a pretty stunning image for an engineering camera.



Two Disks in One: How Accretion Disks Drive Black Hole Jets

This artist's illustration shows a rapidly-feeding supermassive black hole launching jets from its poles. For this to happen, the accretion disk has to have large-scale magnetic fields. But not all do, generating a contradiction. New research has an answer. Image Credit: Tohoku University.

SMBH jets are driven by thick, hot accretion disks with powerful magnetic fields. But there's a bit of a paradox. Some SMBH produce jets, even though they appear to have thin, cold accretion disks. New research has solved this paradox, showing that disks can be truncated into an outer cold disk and an inner hot disk.



New Evidence for an Old Prediction: Recoiling Supermassive Black Holes

This artist's impression shows a distant quasar, an extremely luminuos active galactic nuclei hosted by a supermassive black hole. We know that SMBH can merge, but theory says that in some mergers, the merger remnant recieves a powerful kick that drives it into a pendulum-like motion across the center of the galaxy. New research has uncovered statistical proof of these merger remnant SMBH. Image Credit: ESO/M. Kornmesser.

Theory says that during some SMBH mergers, the merger remnant receives a recoil kick from gravitational waves. Instead of sitting placidly in the galactic center, these recoiled SMBH are sent on a pendulum-like motion, back and forth through the galactic center. New research has found statistical evidence supporting their existence.



Wednesday, October 21, 2026

How Flare Ribbons Reveal Hidden Solar Explosions on the Sun

NASA’s Solar Dynamics Observatory captured this image of a solar flare – as seen in the bright flash on the right side – on Sept. 10, 2017. The image shows a combination of wavelengths of extreme ultraviolet light that highlights the extremely hot material in flares, which has been colorized. There's a lot to learn about flaring, and the ever-changing Sun itself, and new research made progress in understanding its flaring behaviour. Image Credit: NASA/SDO

Solar flaring is complex behaviour triggered by reconnection, when magnetic field lines break and then snap back to the Sun's surface. The flaring is complex behaviour, and its details are difficult to observe. Researchers found a new way to study flaring behaviour.



There Should Be Black Holes in our Neighbourhood. Can We Find Them?

This artist's illustration shows a stellar-mass black hole (left) accreting material from a much larger Wolf-Rayet star. In this case, the black hole is emitting bright energy and is hard to miss. But other stellar-mass black holes are more isolated, with little to feed on and emitting little radiation, and finding them is difficult. Image Credit: By ESO, CC BY 4.0, https://commons.wikimedia.org/w/index.php?curid=9551709

Stellar-mass black holes should be in our neighbourhood within about 50 light years of the Solar System. But they're likely isolated, without much to feed on, making them difficult to find. Gaia found some candidates, but confirming them is tough.



There Must Be Stellar-Mass Black Holes in our Stellar Neighbourhood. Can We Find Them?

This artist's illustration shows a stellar-mass black hole (left) accreting material from a much larger Wolf-Rayet star. In this case, the black hole is emitting bright energy and is hard to miss. But other stellar-mass black holes are more isolated, with little to feed on and emitting little radiation, and finding them is difficult. Image Credit: By ESO, CC BY 4.0, https://commons.wikimedia.org/w/index.php?curid=9551709

Stellar-mass black holes should be in our neighbourhood within about 50 light years of the Solar System. But they're likely isolated, without much to feed on, making them difficult to find. Gaia found some candidates, but confirming them is tough.



Mars’s Most Mysterious Cloud Might Be Defying Textbook Cloud Physics

The Arsia Mons Elongated Cloud as seen from Mars Express. Credit - ESA/DLR/FU Berlin

It may not be as obvious, but just like Earth, Mars has seasons. And every day of every summer, an 1,800 kilometer long thin white cloud appears to the west of Arsia Mons, a 20 kilometer high extinct shield volcano. At least for a few hours, before it dissipates until it reappears the next morning. Scientists have known about this feature, which they call the Arsia Mons Elongated Cloud (AMEC), for decades, but planetary scientists have been unable to explain it using traditional atmospheric models. But a new paper, published in Nature Geoscience by a research team led by Dr. Jorge Hernández-Bernal of the Sorbonne, suggests that the cloud could be the first documented real-world example of a cloud flash-freezing out of thin air.



Tuesday, October 20, 2026

Scientists Use Ancient Rains to Map the Possible Origin Life on Mars

This artist's concept depicts the early Martian environment (right) – believed to contain liquid water and a thicker atmosphere – versus the cold, dry environment seen on Mars today (left). Credit: NASA's Goddard Space Flight Center.

Billions of years ago, rain may have helped shape where the chemistry of life could begin on Mars. A new study maps how formaldehyde, an important prebiotic molecule, may have reached the surface. This map could help guide future missions searching for signs of past life on Mars.



JAXA's Martian Moons eXploration Mission is on its Way to Mars and Phobos

JAXA launched its MMX sample return mission to Phobos on October 20th. It was sent on its way in an H3 launch vehicle, Japan's next-generation heavy-lift launch vehicle. It will reach Mars in August 2027, and after several years will return a sample from Phobos to Earth. Image Credit: JAXA.

JAXA successfully launched its Martian Moon eXplorer on its way to Mars and Phobos. It'll reach Mars in about six months, and will orbit the planet for about a month before transferring to an orbit around Phobos. It will deploy a small lander, which will help select a sample-gathering location for the main part of the mission. By 2031, the regolith sample from Phobos should be back on Earth.



The Gas Near Sagittarius A-star is Enriched in Metals, Probably from Supernovae Explosions

This image shows the Milky Way in infrared, and the galactic center in x-rays. New research based on JWST data shows how the gas near the supermassive black hole in the Milky Way's center is metal-enriched. It's probably because of supernovae explosions that synthesized the metals. Image Credit: By NASA - NASA, Public Domain, https://commons.wikimedia.org/w/index.php?curid=22554706

The region near Sagittarius A-star, the Milky Way's supermassive black hole, is enriched in metals, although only modestly. The likely cause is supernovae explosions, which synthesize elements heavier than hydrogen and helium. Over time, this metal-rich gas found its way towards the SMBH. The increased metallicity and heat from the supernova affect how fast gas flows into the SMBH.



JWST Tracks Shifting Water Clouds and Churning Gases on the Coldest Known Brown Dwarf

Artist's conception of a brown dwarf. Credit - NASA / JPL-Caltech

When picturing a star, typically people think of giant balls of burning gas in the sky that emit enough light they are hard to miss. Planets, on the other hand, come in one of two general categories - rocky worlds like Earth or gas giants similar to Jupiter. But there is a third category of astronomical object that doesn’t really fit either of those descriptions, and also doesn’t exist in our own solar system. Known as a brown dwarf, they are sometimes called a “failed star” as they form the same way stars do, but never reach the critical mass of material to create active fusion in the cores. They are also much too massive to be considered a regular planet. But a new paper from researchers led by Brittany Miles of the University of Arizona describes one similarity between the coldest known brown dwarf and some of the planets in our solar system - it has water-ice clouds.



Monday, October 19, 2026

Webb Captures This Golden Galaxy Cluster in All it's Glory

Webb captures the massive galaxy cluster MACS J0454.1-0300, made of many golden elliptical galaxies. Credit: NASA/ESA/CSA

The NASA/ESA/CSA James Webb Space Telescope Picture of the Month features the brilliant golden galaxies belonging to the MACS J0454.1-0300 galaxy cluster.



The ESA's Euclid Space Telescope Has Discovered A New Comet

The Euclid space telescope captured this image of the comet C/2026 S1 (Euclid), the first comet discovered by the space telescope. This is a happy accident, since Euclid's mission is to measure billions of galaxies and study the force that drives the expansion of the Universe, dark energy. Euclid has observed other comets, but this is the first one it's discovered. Image Credit: ESA/Euclid/Euclid Consortium/NASA, M. Pöntinen et al. 2026. Licence: CC BY-SA 3.0 IGO or ESA Standard Licence

The ESA's Euclid space telescope was launched in July, 2026, and its mission is to observe billions of galaxies. The goal is to measure their redshifts over 10 billion years of Universal expansion, to better understand dark matter and dark energy. Surprisingly, the telescope has discovered a brand new comet, now named C/2026 S1 (Euclid).



Achievement Unlocked: Microblazar Confirmed

This artist's illustration shows an astrophysical jet emitted by an active supermassive black hole. When of these jets is aimed at Earth, we call it a blazar. Astrophysicists have found the first microblazar, a stellar mass black hole emitting with one jet aimed at Earth. It may be the source of the highest-energy particles in the galaxy. Image Credit: NASA/JPL-Caltech

Researchers have confirmed the existence of the first microblazar. Unlike blazars, which are extragalctic and powered by supermassive black holes, microblazars are inside the Milky Way, and are powered by stellar mass black holes. The microblazar may be the source for the most energetic particles in the galaxy.



Saturday, October 17, 2026

New Research Reveals How Long Stays in Space Affects the Human Genome

Human cells with fluorescently labeled chromatin (green) and microtubules (magenta) appear elongated after 24-hour exposure to fluid flows. Credit: Kanellakopoulos/Zidovska/NYU

A new study in Science Advances addresses the pressing questions about how long-duration exposure to microgravity affects the human genome.