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Space News
Earthsky
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Image Credit: Earthsky
2024 December solstice: All you need to know
- The December solstice in 2024 falls on December 21 and marks the sun's southernmost point in the sky this year at 9:21 UTC.
- For the Northern Hemisphere, it will be the longest night and shortest day of the year and for the Southern Hemisphere, it'll be the shortest and longest day of the year.
- After the December solstice, the sun will start moving northward in the sky again.
- This solstice is caused by the tilt of Earth's axis and orbital motion around the sun and it's the same reason that causes winter and summer.
- On December solstice day, the sun takes its farthest pass south on the globe.
- The key is in what is called true solar noon, the time of day that the sun reaches its highest point in its journey across your sky.
- All of the Earth's creatures are affected by the length of daylight brought by the sun.
- People built monuments such as Stonehenge in England and Machu Picchu in Peru to follow the sun's yearly progress.
- Happy Solstice!
- It's important to celebrate the seasonal changes no matter where you live on Earth's globe.
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Nasa
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Image Credit: Nasa
NASA Sees Progress on Starlab Commercial Space Station Development
- A NASA-funded commercial space station, Starlab, has achieved four key development milestones.
- The milestones include reviews of the habitat structural test article preliminary design, systems integration, integrated operations, and a habitat structural test plan.
- Starlab is designed to launch on a single flight and consists of a large habitation and laboratory module with a smaller service module for power and propulsion.
- NASA is supporting the design and development of multiple commercial space stations, including Starlab, to transition to a new low Earth orbit model.
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Universe Today
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Image Credit: Universe Today
We Might Finally Know How Galaxies Grow So Large
- Spheroids, also known as galactic bulges, are where most stars in the Universe reside.
- Elliptical galaxies are populated with older stars and astronomers don’t know how these ancient, bulging galaxies formed and evolved.
- Infrared/submillimetre-bright galaxies have long been suspected to be related to spheroid formation, but observing them is challenging.
- The Sersic index and the Spergel index helped astronomers characterize the complex structure of galaxies and led to new insights into how spheroids form through mergers and the resulting influx of cold, star-forming gas.
- The spheroids can maintain their shape for up to approximately 50 million years after the galaxy merge.
- After the intense period of star formation in the spheroid, the gas is used up, and things die down.
- These types of galaxies were more plentiful in the early Universe than they are now.
- The researchers’ results show that these galaxies used up their fuel quickly, forming the spheroids that are now populated by old stars.
- Previous research found evidence for tri-axiality also found heavy ellipticity and other evidence showing that submillimeter-bright galaxies are disks with bars in the submillimeter.
- The findings redefine our understanding of how galaxies were created in the early universe and give us a more complete picture of early galaxy formation.
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Nasa
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Image Credit: Nasa
NASA Finalizes Strategy for Sustaining Human Presence in Low Earth Orbit
- NASA has released its final goals and objectives for low Earth orbit, defining the long-term approach toward advancing microgravity science, technology, and exploration.
- The Low Earth Orbit Microgravity Strategy will guide the agency toward the next generation of continuous human presence in orbit, enable greater economic growth, and maintain international partnerships.
- The final framework includes 13 goals and 44 objectives across seven key areas: commercial low Earth orbit infrastructure, operations, science, research and technology development for exploration, international cooperation, workforce development and science, technology, engineering, and mathematics (STEM) engagement, and public engagement.
- The low Earth orbit microgravity goals and objectives will drive NASA's need to maintain continuous human presence in the era of commercial low Earth orbit destinations.
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TechCrunch
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Image Credit: TechCrunch
TechCrunch Space: Sayonara
- TechCrunch Space newsletter bids farewell for the year 2024.
- Expectations for SpaceX progress on Starship, changes to NASA leadership, Rocket Lab's Neutron debut, and missions for Impulse Space and Varda.
- Possible sale of Boeing's space business rumored, signaling a new world order.
- Fleet Space Technologies secures $100 million Series D funding for mineral prospecting technology.
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Nasa
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Image Credit: Nasa
Celebrating 20 Years: Night Sky Network
- NASA’s Night Sky Network celebrates its 20th year of fostering science literacy through astronomy.
- Started in 2004, the Night Sky Network connects NASA science and missions to amateur astronomy clubs, who bring this knowledge to schools, museums, observatories, and other organizations.
- Currently supporting over 400 astronomy clubs across the US, NSN has connected with 7.4 million people since its inception.
- NSN provides outreach toolkits, training videos, webinars, and resources to support clubs in sharing the wonders of the night sky with their communities.
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Nasa
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Image Credit: Nasa
Sols 4393-4395: Weekend Work at the Base of Texoli Butte
- Curiosity rover continues its progress over the Mount Sharp bedrock.
- The rover will investigate the northern base of the "Texoli" butte.
- Various instruments were used to characterize the bedrock and analyze its composition.
- Curiosity will drive 44 meters west as it approaches intriguing boxwork structures.
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Livescience
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Meteoroid news, features and articles
- Meteoroids are tiny asteroids or bits of comets that become meteors when they burn up in a planet's atmosphere, and meteorites when they strike the surface intact.
- Live Science provides articles and guides on meteoroids, including information on how many meteorites hit Earth annually, tips for observing celestial events like the Perseid meteor shower, and coverage of meteoroid research.
- Some notable topics covered include studies on meteorites containing the building blocks of DNA, the discovery of the world's first "boomerang meteorite", and the oldest evidence of a meteor impact on Earth.
- To stay informed on the latest meteoroid news, features, and articles, visit Live Science.
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Livescience
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Image Credit: Livescience
NASA solves 44-year-old mystery of why Jupiter's Io is so volcanically active
- NASA scientists have solved the mystery of why Jupiter's moon Io is volcanically active.
- Io, slightly larger than our moon, has about 400 volcanoes and plumes from eruptions can be seen from Earth.
- Data collected by NASA's Juno spacecraft during flybys of Io revealed that the moon's volcanism is fueled by its tidal flexing caused by gravitational forces from Jupiter.
- The research findings have implications for understanding planetary formation and evolution.
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Nasa
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Image Credit: Nasa
NASA Names New Leader of STEM Engagement
- Elaine P. Ho has been appointed as the new associate administrator of NASA’s Office of STEM Engagement (OSTEM).
- She will lead the agency's efforts to inspire Artemis Generation students and educators in STEM fields.
- Ho will also continue her role as the associate administrator for NASA’s Office of Diversity and Equal Opportunity while a replacement is sought.
- Her previous experience includes roles at the White House and a career as an attorney and U.S. Air Force prosecutor.
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Guardian
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Image Credit: Guardian
Our Martian heritage must be preserved, say leading scientists
- Archaeologists suggest preserving human activity on Mars, including rovers and landing sites, as part of the archaeological record of space exploration.
- Researchers express concerns that natural weathering, meteoroid impacts, and accidents could destroy important artifacts on Mars.
- They propose designing future missions with preservation in mind and investigating the potential risks of human material on Mars.
- The team also emphasizes the need for a systematic approach to recording and mapping space heritage on Mars and other celestial bodies.
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Nasa
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Image Credit: Nasa
Dragon Cargo Spacecraft Leaves Station Packed With Science
- The SpaceX Dragon spacecraft has undocked from the International Space Station and is set to splashdown off the coast of Florida on December 17.
- The spacecraft carried nearly 6,000 pounds of crew supplies, science investigations, and equipment to the station.
- NASA will not stream the splashdown but will provide updates on their space station blog.
- The Dragon spacecraft arrived at the space station on November 5 as part of a commercial resupply mission.
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Nasa
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Image Credit: Nasa
NASA+ Broadcasting Dragon Departing Station
- The SpaceX Cargo Dragon resupply ship is photographed departing the space station on July 8, 2021.
- The unpiloted SpaceX Dragon spacecraft will undock at 11:05 a.m. EST from the forward port of the space station’s Harmony module and move a safe distance away from the station.
- After re-entering Earth’s atmosphere, the spacecraft will make a parachute-assisted splashdown off the coast of Florida.
- The spacecraft arrived at the orbiting laboratory on November 5, 2020, carrying crew supplies, science investigations, and equipment.
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Guardian
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Image Credit: Guardian
EU launches €10bn space programme to rival Musk’s Starlink
- The EU has launched a €10bn space programme with a constellation of 290 satellites to rival Elon Musk’s Starlink.
- The constellation aims to ensure the EU's security for governments and armies amidst global concerns over cybersecurity.
- The UK has not expressed interest in joining the Iris2 project, which offers sublease communications capacity as an alternative to Starlink.
- The programme involves high- and lower-powered satellites and is expected to begin communications in 2030.
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