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Nasa
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Discovery Alert: ‘Super-Earth’ Swings from Super-Heated to Super-Chill
- A possible 'super-Earth' orbits a relatively close, Sun-like star, and could be a habitable world – but one of extreme temperature swings, from scorching heat to deep freeze.
- The newly confirmed planet is the outermost of three detected so far around a star called HD 20794, just 20 light-years from Earth.
- Its 647-day orbit is comparable to Mars in our solar system, but this planet's orbit is highly eccentric, stretched into an oval shape.
- The planet spends a good chunk of its year in the 'habitable zone' around its star, but due to its eccentric orbit, it experiences extreme temperature swings and could be about six times as massive as Earth.
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Nasa
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NASA’s Chevron Technology Quiets the Skies
- NASA conducted groundbreaking flight tests in March 2001 on a Learjet equipped with a chevron nozzle to reduce aircraft noise levels.
- These tests were pivotal in validating the effectiveness of chevron nozzles in lowering noise for modern aircraft and communities.
- The research on noise reduction dates back to the 1950s, with a significant focus in the 1970s due to noise-limiting mandates.
- NASA researchers discovered that chevron nozzles, inspired by military technology, could effectively reduce engine noise by improving air mixing.
- Collaboration with engine manufacturers led to the development and testing of various chevron designs at NASA's Aero-Acoustic Propulsion Laboratory.
- Flight tests on the Learjet demonstrated the effectiveness of chevron nozzles, with only a minor impact on thrust performance.
- The successful flight tests paved the way for commercial implementation of chevron technology in aircraft engines, starting with GE's CF34-8.
- The ease of integration and minimal impact on thrust made chevron technology a game-changer in noise reduction for airliners like the 737 MAX and 787 Dreamliner.
- NASA awarded the team involved in the flight tests an innovation award for their contributions to noise reduction technology.
- Today, chevron nozzles are instrumental in lowering noise levels near airports and continue to be incorporated into newer aircraft engine designs.
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TechCrunch
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Musk’s Starlink to launch in India through Airtel
- Telco giant Airtel announces partnership with SpaceX to launch Starlink's high-speed satellite internet services in India.
- Services are subject to SpaceX receiving regulatory clearance to sell Starlink in the country.
- Airtel's partnership comes as a blow to billionaire Mukesh Ambani and Reliance Jio.
- India's new telecom bill and government support for satellite spectrum auction could help line up Starlink's launch in the country.
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The Robot Report
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RISE Robotics sets sights on Guinness World Record for strongest prototype arm
- RISE Robotics plans to set a Guinness World Record for the strongest robotic arm prototype.
- The company offers Beltdraulic, an electric linear actuator technology that is stronger and more efficient than hydraulic systems.
- RISE Robotics will demonstrate its advancements in heavy machinery and industrial automation on March 20.
- The event will include a live demonstration, expert insights, and behind-the-scenes access to the innovative technology used in the robotic arm.
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Knowridge
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Ditch the dryer: How air drying can save you money and help the planet
- Switching to air drying clothes could save money and cut pollution
- Dryers use about 3% of all household energy in the US, costing Americans over $7 billion annually
- A household that stops using a dryer can save around $2,100 over the dryer's lifetime and reduce carbon emissions by over 3 tons
- Using a mix of air drying and a dryer can save more money and energy than buying a new, energy-efficient dryer
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Insider
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Musk said he wouldn't withdraw Starlink for Ukraine. Europe is looking for alternatives — but would struggle to replace it.
- Elon Musk stated that turning off Starlink could lead to Ukraine's military collapse, emphasizing the importance of the service in the conflict.
- While Musk assured that Starlink terminals won't be turned off, European countries are considering alternatives due to concerns over US security guarantees.
- Replacing Starlink poses significant challenges due to the vast scale and complexity of the task.
- European allies, including France's Eutelsat and the EU's GovSatCom initiative, are being explored as potential Starlink replacements.
- Eutelsat's stock price surged recently, reflecting growing interest in alternative satellite broadband providers.
- However, replacing the 40,000 Starlink terminals in Ukraine would be a daunting task for any alternate provider, as acknowledged by industry experts.
- Clayton Swope from the Center for Strategic and International Studies highlighted Starlink's crucial role in providing broadband services to Ukraine and the challenges of finding a substitute.
- The absence of Starlink could have cascading effects on Ukrainian military operations, communication, and internet access, impacting both civilians and troops.
- European aerospace companies are exploring collaborations to compete with SpaceX in the satellite industry, reflecting the growing interest in diversifying satellite services.
- The situation serves as a reminder for countries to reconsider reliance on private companies for crucial communication infrastructure, emphasizing the need for self-reliance.
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Earthsky
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Image Credit: Earthsky
New map of Andromeda galaxy and its colossal ecosystem
- The Andromeda galaxy, our Milky Way's nearest neighbor, is a massive spiral galaxy with 36 known dwarf satellite galaxies.
- NASA's Hubble Space Telescope has created a new 3D map of the Andromeda galaxy and its satellite galaxies, offering insights into their evolution over 14 billion years.
- Research published in The Astrophysical Journal reveals that star formation in Andromeda's satellites has persisted longer than previously thought, posing a puzzle for astronomers.
- Andromeda's galactic ecosystem is asymmetrical and disrupted, likely due to a past merger with another galaxy.
- The Hubble observations suggest that Andromeda's evolution has been more dynamic compared to the Milky Way, with implications for small-galaxy growth.
- Astronomers plan more observations in five years to study the motions of Andromeda's dwarf satellites since their formation billions of years ago.
- Star formation in Andromeda's satellites, such as Messier 32, has continued for almost the entire age of the universe, which is puzzling to scientists.
- The satellite galaxies around Andromeda exhibit unusual orbital configurations, adding to the mysteries of their formation and evolution.
- Clues from the Hubble observations indicate diverse evolutionary paths for low-mass galaxies in Andromeda's ecosystem compared to the Milky Way satellites.
- The Hubble Space Telescope's new insights provide a comprehensive view of the Andromeda galaxy and its complex ecosystem, shedding light on its intriguing history.
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The Verge
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Ex-Google CEO Eric Schmidt is the newest Big Tech-to-space exec
- Former Google CEO Eric Schmidt has become the CEO of rocket startup Relativity Space.
- Schmidt will be replacing Relativity Space co-founder Tim Ellis.
- Relativity Space is known for launching the world's first 3D printed rocket, called the Terran 1.
- They are currently developing the Terran R, a reusable medium-to-heavy-lift launch vehicle.
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Digitaltrends
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Image Credit: Digitaltrends
SpaceX needs good weather for Wednesday’s crewed launch. Here’s how it’s looking
- SpaceX and NASA are making final preparations for the launch of Crew-10 from the Kennedy Space Center in Florida, targeted for Wednesday, March 12.
- The weather is looking great for Crew-10’s launch according to the latest forecast from the 45th Weather Squadron.
- There’s a 95% chance of favorable conditions for launch.
- The Crew Dragon spacecraft will carry NASA astronauts Anne McClain and Nichole Ayers, along with JAXA astronaut Takuya Onishi and Roscosmos cosmonaut Kirill Peskov, to the International Space Station.
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Insider
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Image Credit: Insider
Eric Schmidt named CEO of a rocket startup. It could put him in competition with Elon Musk and Jeff Bezos.
- Former Google CEO Eric Schmidt has become the CEO of rocket startup Relativity Space.
- The company aims to build reusable rockets and establish an industrial base on Mars.
- Schmidt's leadership may put Relativity Space in competition with Elon Musk's SpaceX and Jeff Bezos' Blue Origin.
- Relativity Space, known for using 3D printing in rocket production, was valued at over $4 billion in 2021.
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Digitaltrends
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Watch how astronauts train for the space station’s microgravity
- New astronauts are trained for microgravity conditions aboard the International Space Station (ISS).
- Special flights called 'parabolic flights' are used to simulate microgravity environments.
- During the flights, trainee astronauts experience brief periods of weightlessness.
- Aboard the aircraft, astronauts and researchers can conduct experiments in microgravity conditions.
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Knowridge
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Image Credit: Knowridge
Scientists develop first flat telescope lens that captures color
- Scientists at the University of Utah have developed a flat lens that can capture full-color images.
- Unlike traditional curved lenses, the flat lens remains lightweight and compact.
- The lens overcomes color accuracy issues typically associated with flat lenses.
- This breakthrough has the potential to revolutionize telescopes and imaging systems used in space exploration.
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Spaceflightnow
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High winds scrub SpaceX’s Starlink 12-21 launch from Cape Canaveral
- SpaceX's Starlink 12-21 launch from Cape Canaveral has been scrubbed due to high winds.
- This comes after a fuel leak caused the destruction of a Falcon 9 booster.
- The launch is rescheduled for Tuesday night at 10:48 p.m. EDT.
- The mission includes 21 Starlink V2 Mini satellites, 13 of which have Direct to Cell capabilities.
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