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Elon Musk’s rocket company SpaceX launched a four-person crew on a trip to the International Space Station early on Thursday, with a Russian cosmonaut and United Arab Emirates astronaut joining two NASA crewmates on the flight.

The SpaceX launch vehicle, consisting of a Falcon 9 rocket topped with an autonomously operated Crew Dragon capsule called Endeavour, lifted off at 12:34am EST (11:04am IST) from NASA’s Kennedy Space Center in Cape Canaveral, Florida.

A live NASA webcast showed the 25-story-tall spacecraft ascending from the launch tower as its nine Merlin engines roared to life in billowing clouds of vapour and a reddish fireball that lit up the pre-dawn sky.

The launch was expected to accelerate the Crew Dragon to an orbital velocity of 17,500 miles per hour (28,164kph), more than 22 times the speed of sound.

The flight came 72 hours after an initial launch attempt was scrubbed in the final minutes of countdown early on Monday due to a clog in the flow of engine-ignition fluid. NASA said the problem was fixed by replacing a clogged filter and purging the system.

The trip to the International Space Station (ISS), a laboratory orbiting some 250 miles (420 km) above Earth, was expected to take nearly 25 hours, with rendezvous planned for about 1:15am. EST (12:00am IST) on Friday as the crew begins a six-month science mission in microgravity.

Designated Crew 6, the mission marks the sixth long-term ISS team that NASA has flown aboard SpaceX since the private rocket venture founded by Musk – billionaire CEO of electric car maker Tesla and social media platform Twitter – began sending American astronauts to orbit in May 2020.

The latest ISS crew was led by mission commander Stephen Bowen, 59, a onetime US Navy submarine officer who has logged more than 40 days in orbit as a veteran of three space shuttle flights and seven spacewalks.

Fellow NASA astronaut Warren “Woody” Hoburg, 37, an engineer and commercial aviator designated as the Crew 6 pilot, was making his first spaceflight.

The Crew 6 mission also is notable for its inclusion of UAE astronaut Sultan Alneyadi, 41, only the second person from his country to fly to space and the first to launch from US soil as part of a long-duration space station team. UAE’s first-ever astronaut launched to orbit in 2019 aboard a Russian spacecraft.

Rounding out the four-man Crew 6 was Russian cosmonaut Andrey Fedyaev, 42, who like Alneyadi is an engineer and spaceflight rookie designated as a mission specialist for the team.

Fedyaev is the second cosmonaut to fly aboard an American spacecraft under a renewed ride-sharing deal signed in July by NASA and the Russian space agency Roscosmos, despite heightened tensions between Washington and Moscow over Russia’s invasion of Ukraine.

The Crew 6 team will be welcomed aboard the space station by seven current ISS occupants – three U.S. NASA crew members, including commander Nicole Aunapu Mann, the first Native American woman to fly to space, along with three Russians and a Japanese astronaut.

The ISS, about the length of a football field, has been continuously operated for more than two decades years by a U.S.-Russian-led consortium that includes Canada, Japan and 11 European countries.

The Crew 6 mission follows two recent mishaps in which Russian spacecraft docked to the orbiting laboratory sprang coolant leaks apparently caused micrometeoroids, tiny grains of space rock, streaking through space and striking the craft at high velocity.

One of the affected Russian vehicles was a Soyuz crew capsule that had carried two cosmonauts and an astronaut to the space station in September for a six-month mission now set to end in March. An empty replacement Soyuz to bring them home arrived at the space station on Saturday.

© Thomson Reuters 2023

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Rare Titan Shadow Transits Will Sweep Across Saturn in Summer 2025

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June 30, 2025

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Rare Titan Shadow Transits Will Sweep Across Saturn in Summer 2025

Saturn’s largest moon Titan will cast its shadow across the planet’s surface in a rare spectacle this summer. Over the coming months, observers on Earth may see a dark “hole” move across Saturn’s disk as Titan passes in front of the planet. This event is tied to a special alignment: roughly every 15 years, Saturn’s rings become edge-on to our view (a ring-plane crossing or equinox). Indeed, in March 2025 the rings briefly vanished as they lined up edge-on, setting the stage for Titan’s shadow to loom large on Saturn’s globe. After this year’s transit season, the configuration won’t recur until about 2040, making these transits uniquely unmissable.

Saturn’s Equinox and Titan’s Transits

According to Space.com, right now Saturn is near its equinox, meaning its tilted rings are edge-on to Earth. This geometry allows Titan’s shadow – a dark spot on Saturn – to sweep across the planet’s face, much like a lunar eclipse but on Saturn. Titan orbits Saturn about every 16 days, so during this alignment we can see its shadow cross Saturn’s disk repeatedly. In fact, roughly ten Titan shadow-transit events are expected during 2025. Three have already occurred (most recently on June 16), and seven more are forecast from July through early October 2025. When visible, each transit looks like a moving dark spot (a “hole”) on Saturn’s bright disk.

Viewing the Titan Shadow Transits

These transits are faint and require planning. A good telescope (at least 200× magnification) is needed to see Titan and its shadow. For viewers in North America, Saturn will be low in the pre-dawn sky during the event dates. According to Sky & Telescope, the remaining 2025 transit dates are July 2, July 18, August 3, August 19, September 4, September 20 and October 6 (local viewing times vary by location).

Early-season events last several hours, but the crossings shorten as the year goes on: by Oct. 6 the shadow is only visible briefly at the exact mid-transit moment. Observers should consult astronomy software and aim for clear skies on those dates, as any clouds or mist will obscure the subtle shadow.

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NASA’s Chandra Reveals Stunning Multi-Wavelength Image of Andromeda Galaxy

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June 30, 2025

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NASA’s Chandra Reveals Stunning Multi-Wavelength Image of Andromeda Galaxy

NASA’s Chandra X-ray Observatory provides a new look at the Andromeda galaxy in this multi-wavelength image that includes X-ray, ultraviolet, optical, infrared, and radio images and illustrates the “collaboration of light” across the spectrum. The structure and future fate of the Milky Way are modelled with the help of Andromeda, which is 2.5 million light years away. This combined image not only shows high-energy radiation from a supermassive black hole but also provides a clear view of the arms and core of M31 in remarkable detail. The light is transformed into a sound with a sonification video, bringing another level of sensation.

Chandra X-ray Data Reveals Black Hole Flares and Dark Matter Legacy in New View of Andromeda

As per NASA’s Chandra team, the X-ray observations — alongside data from ESA’s XMM-Newton, NASA’s GALEX and Spitzer, Planck, IRAS, COBE, Herschel, and more — reveal distinct galactic features. Notably, a flare detected in 2013 from Andromeda’s supermassive black hole showed enhanced X-ray emission. The data also honours astronomer Vera Rubin, whose M31 rotation studies led to the first convincing evidence for dark matter. Rubin is now commemorated on a 2025 U.S. quarter.

Among the release features is a signature sonification, with different categories of light — X-ray, ultraviolet, optical, infrared, and radio — translated into sound tones. Volume is controlled by brightness, pitch by frequency position. The result is a sound map of the galaxy’s internal structure.

The Chandra programme for NASA’s Science Mission Directorate in Washington is managed by NASA’s Marshall Space Flight Centre in Huntsville, Alabama. Chandra’s overseer is the Smithsonian Astrophysical Observatory in Cambridge, Massachusetts.

With this updated M31 panorama in hand, astronomers are in for a beautiful sight, but the broader population is also treated to a sight and sound experience that transports us to our Milky Way’s closest galactic neighbour.

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Could These Meteorites Be from Mercury? New Research Hints at Rare Discovery

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June 30, 2025

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Could These Meteorites Be from Mercury? New Research Hints at Rare Discovery

Scientists have observed whether the meteorites can reach Earth from Mercury. Over thousands of meteorites from Mars and the Moon have been observed, but none have been from Mercury, despite it being a nearby rocky planet. A new study revealed Icarus suggests two meteorites, Ksar Ghilane 022 and Northwest Africa 15915, could belong to Mercurian origin. Such a kind of meteorite can offer a realistic opportunity to study the material of the surface of the planet, if the technical challenges and the cost of sending a spacecraft to Mercury are met.

New Meteorite Samples Show Strong Similarities

As per the new studies reported to Physics.org , Meteorite NWA 7325 and aubrites in the past were considered to be possibly from Mercury. However, the mineral composition of their samples has inconsistencies with the known surface data from the Messenger mission of NASA. Aubrites formed on a planet similar in size to Mercury, lacking spectral and chemical similarities, and further weakened as Mercurian fragments.

Ksar Ghilane 022 and NWA 15915, the new samples, share many traits of Mercury crust, with olivine, oldhamite, pyroxene, and minor albitic plagioclase. The oxygen composition of these matched with the aubrites, signalling a similar planetary origin and putting them among strong Mercurian members.

Key Differences Raise Scientific Questions

There are key differences even after that, and the two meteorites contain very little plagioclase than on the Mercury surface, and are about 4,528 million years older than Mercury’s surface material. If they are from Mercury, there is a possibility that they can represent an ancient crust which is no longer visible on the planet.

Future Missions and Scientific Verification

Relating a meteorite to a particular planet is quite difficult without direct samples. BepiColombo missions are orbiting Mercury currently, and can offer valuable insights to confirm meteorites source. Mercurian meteorites can get valuable insights into the formation, composition and history of the planet. There are further findings to be presented at the Meteoritical Society Meeting 2025 in Australia.

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