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Lucy Spacecraft’s Surprise Discovery: Dinkinesh Reveals Binary Nature

Lucy spacecraft’s surprise: Dinkinesh, a main-belt asteroid, revealed its binary nature, setting the stage for the mission’s study of Trojan asteroids.

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Last Updated on July 5, 2024 by Daily News Staff


The Lucy spacecraft, on its way to study the Trojan asteroids in Jupiter’s orbit, recently made an unexpected detour. During a test run past a main-belt asteroid named Dinkinesh, Lucy’s tracking system revealed a surprising revelation. Rather than encountering a single asteroid, Lucy discovered that Dinkinesh is actually a binary system, consisting of one larger asteroid and one smaller moonlet. This unexpected find has provided valuable insights and sets the stage for Lucy’s upcoming mission objectives.


Dinkinesh duo NASA Goddard SwRI Johns Hopkins APL NOAO e1698953221168
When the Lucy spacecraft encountered asteroid Dinkinesh, it found 2 asteroids instead of 1. Lucy captured this image, showing the smaller satellite slightly behind the main asteroid, at 12:55 p.m. EDT (16:55 UTC) on November 1, 2023. At that time, the light travel time between the spacecraft and the asteroid – in the main asteroid belt – was some 30 minutes. The spacecraft and the asteroid were some 300 million miles (500 million km) from Earth. Yet Lucy was so perfectly targeted that it came within a minute of its scheduled closest approach, to pass approximately 270 miles (430 km) above the surface of Dinkinesh. Image via NASA/ Goddard/ SwRI/ Johns Hopkins APL/ NOAO.

Dinkinesh’s Binary Nature Unveiled:
The name Dinkinesh, meaning “marvelous” in Amharic, perfectly encapsulates the astonishment experienced by the Lucy mission team when they realized the true nature of this asteroid. Initial glimpses of Dinkinesh in September indicated its potential binary nature, as its brightness changed over time. This phenomenon resembled the method used by astronomers to identify planets by observing the fluctuation in brightness when they pass in front of stars.

Lucy’s latest images of Dinkinesh confirmed the existence of the binary system. The parent asteroid was estimated to be about 0.5 miles (790 m) wide, while the moonlet measured approximately 0.15 miles (220 m) in size. This successful mini-mission made Dinkinesh and its moon the smallest main-belt asteroids ever to be well-imaged by a spacecraft, marking a significant milestone for scientific exploration.

Lucy’s Next Destination:
After this unexpected encounter with Dinkinesh, Lucy’s trajectory now sets its sights on future objectives. In December 2024, the spacecraft will undergo a second gravity assist from Earth, propelling it toward the orbit of Jupiter. Once there, Lucy will embark on its primary mission of studying the Trojan asteroids. These asteroids have been captured by Jupiter’s gravitational pull and are believed to have coexisted with the gas giant for billions of years within its orbit around the sun.

Alteration of Lucy’s Mission Plan:
Dinkinesh was not originally part of the Lucy mission’s itinerary. The spacecraft’s original plan involved visiting the main-belt asteroid (52246) Donaldjohanson in 2025, followed by a tour of nine Trojan asteroids beginning in 2033. However, the discovery of a conveniently located small asteroid presented an opportunity for Lucy to make an additional visit. Raphael Marschall of the Nice Observatory in France identified Dinkinesh, estimated to be 0.4 miles (700 m) in size. The mission team adjusted Lucy’s course, bringing it closer to the asteroid, and successfully executed the flyby from a mere 270 miles (430 km) away.

Lucy’s Journey So Far:
Launched in October 2021, Lucy underwent its first flyby of Earth a year later. On January 24, 2023, the mission team added Dinkinesh as a new target, deviating from the original plan. Through a strategic maneuver, Lucy managed to observe this fascinating asteroid two years ahead of schedule. It is worth noting that Dinkinesh derives its name from the Ethiopian term for the famous human ancestor fossil known as Lucy, after which the spacecraft’s mission is named.

Significance of the Tracking System:
Lucy’s encounter with Dinkinesh served as an excellent test for the spacecraft’s innovative tracking system. This system was developed to overcome the longstanding challenge of accurately determining the spacecraft’s distance from an asteroid and precisely pointing the cameras. By approaching Dinkinesh at a similar angle relative to the sun as it will during the Trojan asteroid encounters, scientists were able to practice under comparable conditions well in advance of the main mission.


Lucy NASA Asteroid flyby art sq
Artist’s concept of the Lucy spacecraft making a close flyby of an asteroid. Image via NASA.

The Lucy spacecraft’s unexpected discovery of Dinkinesh’s binary nature during its test run past the main-belt asteroid has provided valuable insights into the diversity of celestial bodies within our solar system. This surprise encounter showcases the capabilities of Lucy’s tracking system and its ability to adapt to unforeseen opportunities. As Lucy continues its journey, it promises to unravel more mysteries surrounding the Trojan asteroids and contribute to our understanding of the fascinating celestial objects that reside within Jupiter’s orbit.

Source: NASA

Check out this article from Earthsky https://earthsky.org/space/lucy-spacecraft-to-visit-asteroid-nov-1-2023/?mc_cid=c07b5b936a&mc_eid=36fb49e54a

The science section of our news blog STM Daily News provides readers with captivating and up-to-date information on the latest scientific discoveries, breakthroughs, and innovations across various fields. We offer engaging and accessible content, ensuring that readers with different levels of scientific knowledge can stay informed. Whether it’s exploring advancements in medicine, astronomy, technology, or environmental sciences, our science section strives to shed light on the intriguing world of scientific exploration and its profound impact on our daily lives. From thought-provoking articles to informative interviews with experts in the field, STM Daily News Science offers a harmonious blend of factual reporting, analysis, and exploration, making it a go-to source for science enthusiasts and curious minds alike. https://stmdailynews.com/category/science/

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Urbanism

Los Angeles is in a 4-year sprint to deliver a car-free 2028 Olympics

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Last Updated on March 8, 2026 by Daily News Staff

an aerial shot of the los angeles city hall
Photo by RDNE Stock project on Pexels.com

Jay L. Zagorsky, Boston University

With the Olympic torch extinguished in Paris, all eyes are turning to Los Angeles for the 2028 Olympics.

The host city has promised that the next Summer Games will be “car-free.”

For people who know Los Angeles, this seems overly optimistic. The car remains king in LA, despite growing public transit options.

When LA hosted the Games in 1932, it had an extensive public transportation system, with buses and an extensive network of electric streetcars. Today, the trolleys are long gone; riders say city buses don’t come on schedule, and bus stops are dirty. What happened?

This question fascinates me because I am a business professor who studies why society abandons and then sometimes returns to certain technologies, such as vinyl records, landline phones and metal coins. The demise of electric streetcars in Los Angeles and attempts to bring them back today vividly demonstrate the costs and challenges of such revivals. https://www.youtube.com/embed/9X78ZqGyc5o?wmode=transparent&start=0 The 2028 Olympic Games will be held in existing sports venues around Los Angeles and are expected to host 15,000 athletes and over 1 million spectators.

Riding the Red and Yellow Cars

Transportation is a critical priority in any city, but especially so in Los Angeles, which has been a sprawling metropolis from the start.

In the early 1900s, railroad magnate Henry Huntington, who owned vast tracts of land around LA, started subdividing his holdings into small plots and building homes. In order to attract buyers, he also built a trolley system that whisked residents from outlying areas to jobs and shopping downtown.

By the 1930s, Los Angeles had a vibrant public transportation network, with over 1,000 miles of electric streetcar routes, operated by two companies: Pacific Electric Railway, with its “Red Cars,” and Los Angeles Railway, with its “Yellow Cars.”

The system wasn’t perfect by any means. Many people felt that streetcars were inconvenient and also unhealthy when they were jammed with riders. Moreover, streetcars were slow because they had to share the road with automobiles. As auto usage climbed and roads became congested, travel times increased.

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Nonetheless, many Angelenos rode the streetcars – especially during World War II, when gasoline was rationed and automobile plants shifted to producing military vehicles. https://www.youtube.com/embed/AwKv3_WwD4o?wmode=transparent&start=0 In 1910, Los Angeles had a widely used local rail network, with over 1,200 miles (1,930 kilometers) of track. What happened?

Demise of public transit

The end of the war marked the end of the line for streetcars. The war effort had transformed oil, tire and car companies into behemoths, and these industries needed new buyers for goods from the massive factories they had built for military production. Civilians and returning soldiers were tired of rationing and war privations, and they wanted to spend money on goods such as cars.

After years of heavy usage during the war, Los Angeles’ streetcar system needed an expensive capital upgrade. But in the mid-1940s, most of the system was sold to a company called National City Lines, which was partly owned by the carmaker General Motors, the oil companies Standard Oil of California and Phillips Petroleum, and the Firestone tire company.

These powerful forces had no incentive to maintain or improve the old electric streetcar system. National City ripped up tracks and replaced the streetcars with buses that were built by General Motors, used Firestone tires and ran on gasoline.

There is a long-running academic debate over whether self-serving corporate interests purposely killed LA’s streetcar system. Some researchers argue that the system would have died on its own, like many other streetcar networks around the world.

The controversy even spilled over into pop culture in the 1988 movie “Who Framed Roger Rabbit,” which came down firmly on the conspiracy side.

What’s undisputed is that, starting in the mid-1940s, powerful social forces transformed Los Angeles so that commuters had only two choices: drive or take a public bus. As a result, LA became so choked with traffic that it often took hours to cross the city.

In 1990, the Los Angeles Times reported that people were putting refrigerators, desks and televisions in their cars to cope with getting stuck in horrendous traffic. A swath of movies, from “Falling Down” to “Clueless” to “La La Land,” have featured the next-level challenge of driving in LA.

Traffic was also a concern when LA hosted the 1984 Summer Games, but the Games went off smoothly. Organizers convinced over 1 million people to ride buses, and they got many trucks to drive during off-peak hours. The 2028 games, however, will have roughly 50% more athletes competing, which means thousands more coaches, family, friends and spectators. So simply dusting off plans from 40 years ago won’t work.

Olympic transportation plans

Today, Los Angeles is slowly rebuilding a more robust public transportation system. In addition to buses, it now has four light-rail lines – the new name for electric streetcars – and two subways. Many follow the same routes that electric trolleys once traveled. Rebuilding this network is costing the public billions, since the old system was completely dismantled.

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Three key improvements are planned for the Olympics. First, LA’s airport terminals will be connected to the rail system. Second, the Los Angeles organizing committee is planning heavily on using buses to move people. It will do this by reassigning some lanes away from cars and making them available for 3,000 more buses, which will be borrowed from other locales.

Finally, there are plans to permanently increase bicycle lanes around the city. However, one major initiative, a bike path along the Los Angeles River, is still under an environmental review that may not be completed by 2028.

Car-free for 17 days

I expect that organizers will pull off a car-free Olympics, simply by making driving and parking conditions so awful during the Games that people are forced to take public transportation to sports venues around the city. After the Games end, however, most of LA is likely to quickly revert to its car-centric ways.

As Casey Wasserman, chair of the LA 2028 organizing committee, recently put it: “The unique thing about Olympic Games is for 17 days you can fix a lot of problems when you can set the rules – for traffic, for fans, for commerce – than you do on a normal day in Los Angeles.”

This article has been updated to indicate that Los Angeles has four light-rail lines.

Jay L. Zagorsky, Associate Professor of Markets, Public Policy and Law, Boston University

This article is republished from The Conversation under a Creative Commons license. Read the original article.

Dive into “The Knowledge,” where curiosity meets clarity. This playlist, in collaboration with STMDailyNews.com, is designed for viewers who value historical accuracy and insightful learning. Our short videos, ranging from 30 seconds to a minute and a half, make complex subjects easy to grasp in no time. Covering everything from historical events to contemporary processes and entertainment, “The Knowledge” bridges the past with the present. In a world where information is abundant yet often misused, our series aims to guide you through the noise, preserving vital knowledge and truths that shape our lives today. Perfect for curious minds eager to discover the ‘why’ and ‘how’ of everything around us. Subscribe and join in as we explore the facts that matter.  https://stmdailynews.com/the-knowledge/

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The Bridge

Celebrating International Women’s Day!

International Women’s Day is celebrated globally on March 8th to honor women’s achievements and promote gender equality, originating from a 1908 march in New York for better rights.

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Last Updated on March 7, 2026 by Daily News Staff

International Women’s Day is a global celebration that honors the achievements of women and highlights the progress still to be made in the fight for gender equality. On this day, people around the world come together to recognize the amazing contributions of women everywhere and to rally for greater gender equity in all areas of life.

#EmbraceEquity


The origins of International Women’s Day can be traced back to 1908, when 15,000 women marched through the streets of New York City to demand better working conditions and the right to vote. Since then, the celebration has grown to be an international event, with more than 100 countries recognizing the day. The United Nations even declared March 8th as International Women’s Day in 1975, to honor the struggles of women around the world.

This year’s International Women’s Day theme is #ChooseToChallenge, meaning that everyone is encouraged to call out gender bias and inequality when they see it. We’re also encouraged to celebrate women’s achievements, support each other, and take action for equality.

It’s important to recognize the progress we’ve made in terms of gender equality, but we still have a long way to go. International Women’s Day serves as a reminder that we must continue to fight for gender equality in all areas of life. Let’s use this day to honor the contributions of women around the world, and to continue the fight for a more equitable world.

https://www.internationalwomensday.com/

https://stmdailynews.com/category/science/

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Entertainment

Byron Allen’s Starz Stake Signals Bigger Moves in the Streaming Industry

Byron Allen’s Starz: Byron Allen has acquired a 10.7% stake in Starz Entertainment for approximately $25 million, signaling his long-term media strategy amidst industry consolidation. This investment positions him influentially in the evolving streaming market despite intense competition.

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Byron Allen media entrepreneur portrait 2024
Byron Allen — Founder/Chairman/CEO of Allen Media Group

Byron Allen’s Starz investment

Media entrepreneur Byron Allen has taken another step toward expanding his growing media empire. Through his family office, Allen recently acquired a 10.7% stake in Starz Entertainment, purchasing the shares from a fund managed by former U.S. Treasury Secretary Steven Mnuchin.

The transaction, valued at approximately $25 million, gives Allen a significant minority position in the premium cable and streaming platform. While the investment itself may seem modest compared to the billion-dollar deals common in Hollywood, analysts say the move could signal a larger strategy unfolding in the rapidly evolving streaming industry.

Why the Starz Deal Matters

The shares were sold by Mnuchin’s Liberty 77 Capital fund, which previously invested in the company when Starz was still connected to its former parent, Lionsgate.

In 2025, Lionsgate completed a corporate restructuring that separated its operations into two distinct companies:

  • Lionsgate Studios – responsible for film and television production
  • Starz – focused on premium cable and streaming services

Following the spin-off, Starz became an independent publicly traded company. As a result, investors are still determining the platform’s long-term value in an increasingly crowded streaming marketplace.

A Streaming Platform With Loyal Audiences

Despite facing intense competition from larger platforms such as Netflix, Disney+, and Amazon Prime Video, Starz continues to maintain a strong subscriber base and recognizable content franchises.

  • Outlander – historical drama series
  • The Power franchise created by Courtney A. Kemp and executive produced by 50 Cent

Byron Allen’s Long-Term Media Strategy

Allen’s investment strategy has long focused on owning media distribution and infrastructure rather than simply producing content.

  • The Weather Channel
  • Dozens of local television stations across the United States
  • Multiple niche cable networks and digital platforms

Over the past several years, Allen has also pursued larger acquisitions, reportedly exploring deals involving companies such as Paramount Global and BET Media Group. While those deals did not materialize, they signaled his ambition to expand Allen Media Group into a major force in global media ownership.

The Bigger Picture: Industry Consolidation

Allen’s investment arrives during a time of significant disruption in the entertainment business. Traditional cable television continues to decline as audiences migrate toward streaming platforms. At the same time, major studios and media companies are struggling to make streaming services consistently profitable.

Industry observers believe these pressures could lead to a new wave of consolidation across Hollywood and the streaming sector. Smaller platforms like Starz could become attractive acquisition targets for larger companies seeking additional subscribers and content libraries.

A Potential Hidden Opportunity

For now, Allen’s 10.7% stake does not give him control of Starz. However, it does provide influence as one of the company’s larger shareholders and leaves open the possibility of increasing his ownership in the future.

If consolidation accelerates and streaming platforms begin merging or forming partnerships, assets like Starz could become significantly more valuable. For Byron Allen—whose career began as a stand-up comedian before evolving into one of the most prominent independent media owners in America—the investment may represent another calculated step in a decades-long strategy built around media ownership and long-term growth.

Related Coverage

Dive into “The Knowledge,” where curiosity meets clarity. This playlist, in collaboration with STMDailyNews.com, is designed for viewers who value historical accuracy and insightful learning. Our short videos, ranging from 30 seconds to a minute and a half, make complex subjects easy to grasp in no time. Covering everything from historical events to contemporary processes and entertainment, “The Knowledge” bridges the past with the present. In a world where information is abundant yet often misused, our series aims to guide you through the noise, preserving vital knowledge and truths that shape our lives today. Perfect for curious minds eager to discover the ‘why’ and ‘how’ of everything around us. Subscribe and join in as we explore the facts that matter.  https://stmdailynews.com/the-knowledge/


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