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Earthsky
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Image Credit: Earthsky
Humpback whale breaks record for longest migration
- A male humpback whale has broken the record for the longest documented distance traveled by a humpback.
- This whale traveled through 3 oceans from breeding grounds in Colombia in South America to breeding grounds in Zanzibar in Africa.
- An international team of scientists used an AI platform to identify the whale, aided by whale-loving photographers.
- The researchers discovered the whale traveled approximately 8,000 miles (12,875 km).
- This humpback whale has traveled long east-west, or west-east, which is not usual behavior for this species.
- The specific route the whale took is not known, but scientists believe he may have passed through Antarctica.
- The whale is an adult male that undertook a journey unique compared to its species.
- Scientists used AI-powered photo-matching algorithms to confirm the whale’s long journey.
- The whale may have traveled that long way to search for a mate, look for food, or due to climate change.
- More studies are needed to observe other members of the species to understand why such unusual, long journeys take place.
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Medium
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Image Credit: Medium
Earn $500 a Day with This New AI App
- The 2024 AI App claims to help users earn $527 a day on Amazon in just 60 seconds.
- It utilizes smart algorithms to optimize product listings on Amazon, attracting more sales.
- Early users have reported earning up to $500 in their first week and $2,000 in their first month using the app.
- The app is user-friendly and suitable for beginners looking to generate passive income.
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Knowridge
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Image Credit: Knowridge
Dead stars reveal secrets of extreme gravity and dark matter
- Scientists have confirmed a long-predicted effect in dying stars called white dwarfs: hotter white dwarfs are slightly puffier than cooler ones, even when they have the same mass.
- Studying over 26,000 white dwarfs, this finding could provide insights into extreme gravity and potentially unveil the mysteries of dark matter.
- White dwarfs are the leftover cores of stars that have burned through their nuclear fuel and are incredibly dense.
- Understanding white dwarfs better could contribute to the hunt for dark matter and help refine theories about massive star evolution.
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Earthsky
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Image Credit: Earthsky
Moon’s largest crater is rounder than 1st thought
- The South Pole-Aitken basin, the largest impact crater on the moon, is more circular than scientists previously thought, based on a study by the University of Maryland.
- The 1,550-mile (2,500-km) crater is one of the largest impacts craters in the solar system and sits on the moon’s far side.
- Using high-resolution images from NASA’s Lunar Reconnaissance Orbiter, the researchers studied more than 200 mount formations surrounding the crater to determine its original shape.
- If an impact created a more circular crater, debris will have been more evenly distributed around it, which makes it easier for Artemis astronauts to study rocks from deep within the moon’s mantle or crust.
- Studying these rocks, which would have been blasted from the moon’s lower crust and upper mantle, could provide insights into the moon’s formation and the early history of the solar system.
- This discovery may also offer implications for NASA’s plans to send astronauts to the lunar South Pole.
- India’s Chandrayaan-3 mission, which landed near the lunar South Pole, has previously discovered minerals consistent with a more head-on impact than one at an angle.
- Scientists think that an unusual large mass of material found beneath the South Pole-Aitken basin consists of metal and material leftover from the impact.
- The research, published in Earth and Planetary Science Letters, challenges previous notions and offers a step towards understanding the moon’s early history.
- Implications also apply to missions beyond the moon and understanding how the moon and solar system came to be.
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Earthsky
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Image Credit: Earthsky
Year’s shortest season to start at December solstice
- The December solstice marks the beginning of the year's shortest season.
- The season between the December solstice and March equinox is approximately 89 days, making it Earth's shortest season.
- The December solstice occurs on December 21, 2024, at 9:21 UTC, officially starting the winter season in the Northern Hemisphere and the summer season in the Southern Hemisphere.
- The shortest season is a result of Earth reaching its perihelion, the point in its orbit closest to the sun, in early January, causing it to move more swiftly.
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Silicon
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Image Credit: Silicon
Japanese Space Start-Up Destroys Second Rocket After Launch
- Japanese start-up Space One aborted the launch of its debut rocket for the second time about three minutes after launch on Wednesday.
- The Kairos No. 2 rocket self-destructed after reaching an altitude of more than 100 km and entering space.
- The rocket detected abnormalities in the first-stage engine nozzle control and its trajectory, triggering the self-destruct.
- Japan is trying to set up regular launches by private companies to provide an inexpensive way to launch satellites into space in competition with the US space industry.
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Digitaltrends
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Image Credit: Digitaltrends
SpaceX gets green light for seventh Starship test, but when is it?
- SpaceX has received clearance from the FAA for the seventh test flight of its Starship rocket.
- The launch date for the test flight has not been officially announced yet, but recent reports suggest January 11.
- The seventh flight will utilize the first Block 2 Starship spacecraft with updated designs and improved capabilities.
- SpaceX aims to catch the returning Super Heavy booster using mechanical arms on the launch tower.
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Knowridge
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Image Credit: Knowridge
The mysterious case of the resurrected star
- The star HD 65907 appears young but is actually much older.
- It is believed to be a resurrected star, known as a blue straggler.
- Blue straggler stars are formed when low-mass stars collide and merge.
- HD 65907 is a unique case as it is a field star, not a member of a cluster.
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Digitaltrends
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Image Credit: Digitaltrends
Chinese astronauts perform record-breaking 9-hour spacewalk
- Chinese astronauts Cai Xuzhe and Song Lingdong completed a record-breaking 9-hour spacewalk on the Tiangong space station.
- This spacewalk surpassed the previous record of 8 hours and 56 minutes set by NASA astronauts James Voss and Susan Helms in 2001.
- The astronauts performed tasks such as installing space debris protection devices and inspecting extravehicular equipment.
- China's space station may become a primary location for research in low-Earth orbit after the deorbiting of the International Space Station in 2030.
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Digitaltrends
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Image Credit: Digitaltrends
Boeing Starliner astronauts will stay in space a little while longer
- NASA astronauts who traveled to the International Space Station (ISS) on the Boeing Starliner spacecraft will have their stay in space extended until late March 2025.
- The Starliner had to remain docked to the ISS due to problems with its thrusters and the astronauts were brought back to Earth using a SpaceX Dragon craft.
- The return of the astronauts, originally scheduled for February 2025, has been delayed by a month to allow for a handover period with the upcoming Crew-10 mission.
- NASA assures the public that the astronauts are safe, well-fed, and have an ample supply of provisions on the ISS.
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Knowridge
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Image Credit: Knowridge
Zwicky classifies more than 10,000 exploding stars
- The Zwicky Transient Facility (ZTF) has classified over 10,000 supernovae out of the 100,000 it has detected since 2017.
- The ZTF is named after Swiss astronomer Fritz Zwicky and is a wide-field astronomical survey that observes in optical & infrared and detects transients.
- The ZTF Bright Transient Survey (BTS) is the largest spectroscopic supernovae survey conducted to classify supernovae into distance, type, rarity and brightness.
- The ZTF uses robotic telescopes that image the visible sky every two nights and detect transients by subtracting images of the same portion of sky from subsequent scans.
- The ZTF detects hundreds of thousands of events every night, from small asteroids to gamma-ray bursts, making it challenging for astronomers to keep up.
- The machine learning tools are being developed to classify transients and send them to the Transient Name Server, to avoid duplication in the findings.
- Scientific contributions made by Swiss astronomer Fritz Zwicky are crucial to supernova science and supernova classification system.
- Detecting nearly 16,000 supernovae since 2012, astronomers have discovered the closest and most distant supernovae and thousands of Type 1a supernovae.
- The Vera Rubin Observatory (VRO) is expected to detect millions of supernovae, and handling those detections will require a machine-learning tool similar to the BTSbot.
- Combining data from both ZTF and Vera Rubin observatories will directly address the physics of why supernovae explode.
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Digitaltrends
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Image Credit: Digitaltrends
How to watch the final ISS spacewalk of 2024
- The International Space Station (ISS) will host its third and final spacewalk of 2024 on Thursday, December 19.
- Russian cosmonauts Alexey Ovchinin and Ivan Vagner will install an experiment package to monitor celestial x-ray sources, as well as new electrical connector patch panels.
- They will also remove several experiments in preparation for disposal and relocate a control panel for the European robotic arm.
- NASA will provide live coverage of the spacewalk on NASA+ starting at 9:45 a.m. ET on Thursday.
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Universe Today
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Image Credit: Universe Today
New Research Suggests Io Doesn’t Have a Shallow Ocean of Magma
- Jupiter's moon Io is known for its volcanic activity, with about 400 active volcanoes.
- However, new research suggests that Io does not have a global subsurface magma ocean, indicating a mostly solid mantle.
- The findings from a NASA-supported study also indicate that tidal forces may not always lead to global magma oceans on moons or planetary bodies.
- This study has implications for the understanding of exoplanets that experience tidal heating.
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Universe Today
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Image Credit: Universe Today
The Mysterious Case of the Resurrected Star
- The star HD 65907 is not what it appears to be. It’s a star that looks young, but on closer inspection is actually much, much older.
- Research suggests that it is a resurrected star.
- Astronomers believe HD 65907 is a blue straggler, a star formed by the merger of two low-mass stars.
- This star is unique as it is a field star, not a member of a cluster, and must have cannibalized a companion five billion years ago.
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Nasa
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Image Credit: Nasa
NASA Ames Stars of the Month: January 2025
- The NASA Ames Science Directorate recognizes the outstanding contributions of Maurice Valdez, Niki Parenteau, Dori Myer, and Judy Alfter.
- Maurice Valdez is recognized for his focus and commitment to supporting the division’s scientific productivity as a system administrator.
- Niki Parenteau, a research scientist, has taken a leading role in the development of the Habitable Worlds Observatory and identifying potential biosignatures of life on exoplanets.
- Dori Myer, an archivist, has digitized and preserved institutional knowledge in the Flight Systems Implementation Branch for easy access in the modern age.
- Judy Alfter, a Deputy Project Manager, has excelled in her role during the field campaign for the Plankton, Aerosol, Cloud, ocean Ecosystem Post-launch Airborne eXperiment (PACE-PAX).
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