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Updated: 4 hours 20 min ago

Saturn at Dawn: Catch the Rings Edge-on for 2025

Tue, 04/08/2025 - 7:20am

Familiar Saturn currently provides dawn observers with a bizarre, ‘ring-less’ view.

Categories: Science

Hubble's New Image of a Star Factory in the Small Magellanic Cloud

Tue, 04/08/2025 - 3:38am

NGC346 is a young star cluster in the Small Magellanic Clouds with an estimated 2,500 stars. It’s about 200,000 light years away and this image, taken by the Hubble Space Telescope reveals a beautiful region of star formation. The bright blue stars are many times more massive than the Sun and will live short lives ending in spectacular supernova explosions. The image helps us to understand the stellar formation process in a galaxy that has fewer metals than our own Galaxy.

Categories: Science

There's a Type 1a Supernova in the Making, Just 150 Light-Years Away

Mon, 04/07/2025 - 3:02pm

Astronomers have discovered a remarkable star system just 150 light-years from Earth that's destined for a spectacular cosmic display. The system contains a white dwarf star drawing material from its companion star, with the pair orbiting at just 1/60th of the Earth-Sun distance. With their combined mass reaching 1.56 times that of our Sun, these stars are gradually spiralling toward each other, setting the stage for a spectacular explosion. Fortunately, scientists estimate this cataclysmic event won't occur for roughly 23 billion years, long after our own Sun will have reached the end of its life cycle.

Categories: Science

Asteroid 2024 YR4 Won't Hit Earth, But There May Be a Lunar Light Show

Mon, 04/07/2025 - 12:49pm

Although astronomers have ruled out a smash-up between Earth and an asteroid known as 2024 YR4 in the year 2032, the building-sized space rock still has a chance of hitting the moon. In fact, the chances — slight as they are — have doubled in the past month.

Categories: Science

Andromeda's Black Hole is Winking at Us

Mon, 04/07/2025 - 11:03am

Despite their name, black holes can sometimes emit radiation. A team of astronomers has recently detected a flicker of X-ray radiation from the supermassive black hole at the center of the Andromeda Galaxy. This flicker was identified using 15 years of data from the Chandra X-ray Observatory, revealing two distinct flashes in 2006 and 2013. Interestingly, these flashes coincided with bursts of neutrinos detected by the IceCube Neutrino Observatory, offering exciting new insights into the extreme conditions surrounding the black hole.

Categories: Science

Terraforming Mars Will Require Hitting It With Mulitple Asteroids

Mon, 04/07/2025 - 10:51am

Terraforming Mars has been the long-term dream of colonization enthusiasts for decades. But when you start to grapple with the actual physics of what would be necessary to do so, the effort seems further and further out of reach. Depictions like those of Kim Stanley Robinson's Mars Trilogy are just wildly unrealistic regarding the sheer amount of material that must be moved to the Red Planet to achieve anything remotely resembling Earth-like conditions. That is the conclusion of an abstract presented at the 56th Lunar and Planetary Science Conference by Leszek Czechowski of the Polish Academy of Sciences.

Categories: Science

20 Years of Uranus Observations by Hubble Show a Changing Planet

Sun, 04/06/2025 - 12:10pm

In 1986, the Voyager 2 spacecraft made a flyby of Uranus. It gave us the first detailed images of the distant world. What was once only seen as a featureless pale blue orb was revealed to be...well, a mostly featureless pale blue orb. The flyby gave astronomers plenty of data, but the images Voyager 2 returned were uninspiring. That's because Voyager only viewed Uranus for a moment in time. Things change slowly on the ice giant world, and to study them you need to take a longer view.

Categories: Science

A New Graduate Project Plans to Make Martian Water Drinkable

Sat, 04/05/2025 - 5:03pm

Mars exploration technology has seen a lot of recent successes. MOXIE successfully made oxygen from the atmosphere, while Ingenuity soared above the red planet 72 times. However, to date, no one has ever achieved one thing that will be absolutely critical to any long-term presence on Mars - making drinkable water. There have been plenty of ideas on how to do that. Still, NASA recently started funding a Worcester Polytechnic Institute (WPI) graduate student named Lydia Ellen Tonani-Penha to look into the problem under their Space Technology Graduate Research Opportunities (NSTGRO) funding program. Her Project Tethys will examine ways to purify the frozen or liquid brine that Mars is infused with.

Categories: Science

Perseverance Watched a Dust Devil Eat Another

Sat, 04/05/2025 - 11:26am

NASA's Perseverance was scanning the rim of Jezero Crater when it spotted a Martian dust devil overtake and consume another smaller one. The rover was about a kilometer away from the larger dust devil, which was about 65 meters wide. The smaller one was about 5 meters wide. This isn't Perseverance's first encounter with dust devils. It's seen clusters dancing around it and even captured audio of a dust devil on Mars for the first time.

Categories: Science

Want to Know How to Survive in Space? Ask a Tardigrade

Fri, 04/04/2025 - 3:03pm

Tardigrades are some of the most durable animals ever found. They can handle temperature ranges from -271°C to over 150°C, pressures above 1,200 atmospheric levels, extreme drying, and intense ionizing radiation. Researchers have been studying some of the adaptations that can keep tardigrades alive in extreme environments and consider how they could apply to human space exploration, as well as insights into extraterrestrial life.

Categories: Science

Artemis ESM's Could be Repurposed for Future Missions

Fri, 04/04/2025 - 12:29pm

In a recent paper, an international team of scientists identified how the Orion spacecraft's European Service Module (ESM) could be reused. Rather than letting them burn up in Earth's atmosphere, as planned, they recommend that the ESMs use their power and propulsion capability to conduct valuable scientific research.

Categories: Science

Lunar Regolith Could Power a Future Lunar Station

Fri, 04/04/2025 - 1:28am

Any advanced civilisation needs power. Don’t know about you but I’ve been camping lots, even wild camping but the experience is a whole lot easier if you have power! It’s the same for a long-term presence on the Moon (not that I’m likening my camping to a trip to the Moon!) but instead of launching a bunch of solar panels, a new paper suggests we can get power from the lunar regolith! Researchers suggest that the fine dusty material on the surface of the Moon could be melted to provide a type of crystals that can produce solar electricity! This would allow solar panels to be built on the Moon with only 1% of components sent from Earth!

Categories: Science

NASA's Rover to Explore the Lunar South Pole Is Taking Shape

Thu, 04/03/2025 - 3:03pm

Sometimes, a brief update is all that is needed to keep the public interested in major projects. That's precisely what John Baker and James Keane of NASA's Jet Propulsion Laboratory provided to the 56th annual Lunar and Planetary Science Conference held in Texas last month. Their brief paper showcased the ongoing development of the Endurance autonomous rover, which was more thoroughly fleshed out in a massive 296-page mission concept study back in 2023. But what has the team been up to since then?

Categories: Science

Here's How We Could Quickly Raise Temperatures on Mars

Thu, 04/03/2025 - 1:00pm

Mars is a cold, dry desert, but it could be possible to rapidly increase the temperature of the planet by releasing particles into the atmosphere. Researchers investigated two possible chemicals: graphene or aluminum. With just two liters per second of release, we could double the Mars greenhouse effect, raising its temperature by +5 Kelvin in only 1.1 years. Once the chemical release is stopped, the planet would cool back to its normal state.

Categories: Science

A New Technique to Find Hidden Black Holes

Thu, 04/03/2025 - 11:09am

To the uninitiated, astronomers' interest in ancient black holes might seem like an obsession. Why spend so much time, energy, and resources looking back billions of years just to detect the nearly undetectable? They do it because ancient black holes hold unique clues to understanding the modern Universe.

Categories: Science

A Mission That Could Reach Mercury on Solar Sails Alone

Thu, 04/03/2025 - 9:05am

An innovative proposal would be a first for planetary exploration. Turns out, it’s as tough to drop inward into the inner solar system, as it is to head outward. The problem stems from losing momentum from a launch starting point on Earth. It can take missions several years and planetary flybys before capture and arrival in orbit around Mercury or Venus. Now, a new proposal would see a mission make the trip, using innovative and fuel efficient means.

Categories: Science

Webb Scans Asteroid 2024 YR4, it's 60 Meters Across

Thu, 04/03/2025 - 4:42am

The Torino scale assess’ the risk of a near-Earth object impacting Earth. The list has just had a new addition, asteroid 2024 YR4 which poses a risk to Earth in 2032. The risk has been downgraded to 0% but there’s still value in studying asteroids that are going to come close to Earth. The James Webb Space Telescope just joined in the study by observing the asteroid to provide a new estimate of its size and showed that it’s spinning rapidly.

Categories: Science

Here are SPHEREx's First Images

Thu, 04/03/2025 - 3:49am

The news is always full of images from the Hubble Space Telescope and more recently the James Webb Space telescope but there is a new kid on the block. NASA’s SPHEREx space telescope was launched back in early March and we can already see its first image. The telescope has six detectors and together they can capture a region of sky 20 times wider than the Moon. The first images are uncalibrated but they give a hint as to the capabilities of the instrument.

Categories: Science

Studying Uranian Moons using Passive Radar Sounding

Wed, 04/02/2025 - 8:58pm

How can Uranus be used to indirectly study its moons and identify if they possess subsurface oceans? This is what a recent study presented at the 56th Lunar and Planetary Science Conference hopes to address as a team of scientists investigated using passive radar sounding methods from Uranus to study its five largest moons: Miranda, Ariel, Umbriel, Titania, and Oberon. This study has the potential to help researchers better understand the formation and evolution of Uranus and its largest moons despite a spacecraft not currently visiting Uranus.

Categories: Science

Galaxies Were Already Dying Just 700 Million Years After the Big Bang

Wed, 04/02/2025 - 5:13pm

When galaxies run out of primordial hydrogen and helium, they cease star formation, shifting to primarily long-lived red stars. These galaxies are considered "red and dead." It usually takes billions of years for galaxies to run out of hydrogen, but now astronomers using JWST have found examples of galaxies that have already stopped forming stars just 700 million years after the Big Bang, much earlier than predicted by cosmological models.

Categories: Science

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