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Earthsky
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Image Credit: Earthsky
Rare neutrinos detected from under Antarctic ice
- The IceCube Neutrino Observatory has documented an especially rare type of particularly energetic astrophysical neutrino
- These energetic neutrinos, known as tau neutrinos, have eluded IceCube until now
- For the first time, researchers detected a few tau neutrinos, pulling them out of almost ten years of data
- Their presence puts physicists one step closer to unraveling the mystery of how highly energetic particles like astrophysical neutrinos are produced in the first place
- With the help of computational tools, the team managed to extract seven strong candidate tau neutrinos from about ten years of data
- These taus came from black holes and had higher energies than even the most powerful particle accelerators on Earth
- The data confirms IceCube’s earlier discovery of astrophysical neutrinos, which come in three different types
- By studying the neutrinos, researchers aim to discover how particles behave in space and the behaviors of neutrinos from distant sources, which change flavor and oscillate
- IceCube and other neutrino experiments will gather more data and aim to distinguish the three neutrino flavors, ultimately understanding how neutrinos are produced in black holes
- The study helps researchers to search for neutrino emitters in the universe and understand the limitless space in between
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Earthsky
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Image Credit: Earthsky
Meet Crux, the constellation of the Southern Cross
- Crux is the constellation of the Southern Cross, visible in the Southern Hemisphere skies.
- It consists of four relatively bright stars close to each other and is the smallest of all the 88 constellations.
- The brightest star in Crux is Alpha Crucis, or Acrux, while the Jewel Box is one of the most beautiful open clusters in the Southern Hemisphere.
- The Coalsack Nebula, a dark and cloudy patch of dust and gas, is also found in the Crux constellation.
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Knowridge
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Image Credit: Knowridge
Scientists discover the universe’s first stars with new method
- Astrophysicists from the University of Hong Kong have developed a groundbreaking method to track down the universe’s first stars.
- They can spot these ancient stars by observing tidal disruption events (TDE) when a star gets too close to a black hole.
- The TDE produces incredibly bright flares of light which stretch out and shift in color as they travel through the expanding universe.
- NASA's upcoming James Webb Space Telescope and Nancy Grace Roman Space Telescope are equipped to detect these distant flares, offering a new way to indirectly observe the universe's first stars.
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Earthsky
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Image Credit: Earthsky
Can earthquakes be triggered by intense weather?
- Heavy snowfall and rainfall can play a part in triggering swarm of earthquakes, according to scientists at MIT.
- The earthquakes in question have been occurring on the Noto Peninsula in Japan since 2020.
- Before 2020, earthquakes in the area were fewer and sporadic but then became more intense and began to cluster.
- The researchers looked for patterns in the swarms and found that the start of the earthquake swarm matched up with strong precipitation events of heavy snow or rain.
- The changes in underground pressure also correlate with seasonal patterns of snowfall and rainfall.
- Researchers discovered that weight from snow and rain adds pressure to pore fluid that is responsible for allowing seismic waves to travel more slowly.
- When all of the weight is removed, such as through evaporation or runoff, all of a sudden, that pore pressure decreases and seismic waves are faster.
- The periods of heavy snowfall helped to trigger the earthquake swarm on Japan's Noto Peninsula.
- Note that climate and events like heavy snowfall and rain enhance the original subsurface effects of producing an earthquake swarm.
- The study could contribute to a better understanding of the range of factors that can trigger earthquakes.
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Earthsky
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Image Credit: Earthsky
Mimosa, 2nd-brightest star in Crux, the Southern Cross
- Mimosa, also known as Beta Crucis, is the second-brightest star in the Southern Cross constellation. It may have been named Mimosa by German astronomer Johann Bayer due to its blue-white color. The star is about 350 light-years away from Earth and is a subgiant blue star, more than 3,000 times brighter than our sun in visible light.
- Mimosa is only visible to observers below 30 degrees North latitude and is highest in the sky during the April and May seasons. It is visible by those in the southern reaches of the Northern Hemisphere for a short time each year, such as observers in southerly latitudes around Miami, Florida, in May evenings.
- The star has a small stellar companion, which makes it difficult to precisely determine its mass and radius. It also has three short periodicities in its light and is about 34,000 times more energetic than the sun, according to astronomer James Kaler.
- Crux and Mimosa are unknown in classical western mythology due to their southerly location, although they were known to the Australian Aboriginal peoples and islanders of Polynesia. Mimosa appears on the flags of both Australia and New Zealand as the left side of the crossbar.
- Directly south of Mimosa is the Coalsack, a distinctive dark nebula in the Milky Way. The star is located in the Jewel Box Cluster, a famous and colorful star cluster.
- Mimosa is always visible from the Southern Hemisphere and is the 20th brightest star in all the heavens. It can be observed for a maximum amount of time when it reaches a midnight culmination, which occurs when a star is roughly opposite the sun. This occurs for Mimosa on or about April 2 each year.
- The star stays above the horizon year-round for observers in the Southern Hemisphere and is circumpolar for latitudes of about 30 degrees south and higher.
- Mimosa has a radius about eight times that of the sun and a mass 14 times greater. It is a complex variable star, and much of its energy is radiated in ultraviolet and higher frequencies invisible to the human eye.
- Join EarthSky in making sure everyone has access to the wonders of astronomy by donating now.
- In summary, Mimosa is an intriguing subgiant blue star that is only visible in certain locations and times of the year, but has great significance to those in the Southern Hemisphere and its flags. It is located in the stunning Southern Cross constellation and has an interesting history and science to explore.
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Livescience
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Image Credit: Livescience
Why can't we see the far side of the moon?
- The moon appears to be tidally locked to Earth, which means it takes the same amount of time to rotate on its axis as it does to orbit Earth.
- Tidal locking occurs due to gravitational attraction between the moon and Earth, causing friction that slows down their rotation.
- This is why we can never directly see the far side of the moon from Earth.
- However, spacecraft have captured images of the lunar far side, revealing its crater-covered landscape with fewer maria compared to the near side.
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Medium
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Exploring Exoplanets: Unveiling the Cosmic Tapestry Beyond Our Solar System
- The IAU has set certain criteria to define planets: that it must orbit a star, be big enough to have enough gravity to force it into a spherical shape, and be big enough that its gravity has cleared away any other objects of similar size near its orbit around the Sun. Exoplanets refer to planets orbiting stars other than the Sun and thus exist outside the solar system. The five main ways to find exoplanets are radial velocity, transit, direct imaging, gravitational microlensing, and astrometry
- Radial velocity is detected by orbiting planets that cause stars to wobble in space, changing the colour of the light astronomers observe. Astronomers have detected 1090 planets through this method
- Transit is detected by observing changes in the brightness of a star when a planet crosses in front of it. Astronomers have found 4173 exoplanets using this method, making this the most successful method
- Direct imaging involves taking pictures of exoplanets by removing the overwhelming glare of the stars they orbit. Only 77 exoplanets have been identified using this approach
- Gravitational microlensing uses a planet to act as a lens, causing a star to bend and focus its light towards Earth, thus increasing the star’s brightness. Astronomers have found 217 exoplanets through this method
- Astrometry involves a planet's orbit causing a star to wobble around in space. Merely three exoplanets have been unearthed through this method as it has extremely precise accuracy requirements
- Like the planets in our solar system, exoplanets are classified based on various characteristics including their size, composition, orbital properties, and environmental conditions
- The three most intriguing exoplanets discussed here include Proxima Centauri b, HR 8799, and M51-ULS-1b
- The discovery of exoplanets through various methods has exponentially increased our understanding of planetary formation and evolution. With each new revelation, we're reminded of the boundless wonders that await us in the uncharted territories of space
- While a few of the notable exoplanets have been discussed, there are countless more awaiting detection and exploration. Each discovery brings us closer to answering fundamental questions about the nature of planetary systems, the potential for habitability, and the existence of life beyond Earth
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Scitechdaily
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Image Credit: Scitechdaily
How a New Methodology Rewrites the Age Book for Asteroids
- Researchers at Cornell University have developed a new method for estimating the age of asteroids using dynamics.
- They applied this method to the asteroid Selam and estimated its age to be around 2-3 million years old.
- The new method has advantages over traditional methods as it doesn't require expensive spacecraft or close-up images.
- It can be applied to other binary systems and help better constrain the age of asteroids.
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Medium
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Unicorn Galaxy Free Download
- Unicorn Galaxy Free Download
- 15 high-resolution seamless patterns featuring galaxy unicorn designs.
- Perfect for various design projects such as fabrics, wallpapers, and stationery.
- Strictly prohibited to resell the original files on any platforms.
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Guardian
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Image Credit: Guardian
Aurora australis offers second chance of ‘bloody awesome’ southern lights display on Sunday
- Australians had a second chance to see the aurora australis on Sunday night, after a spectacular southern lights display on Saturday.
- The display was described as 'bloody awesome' and left one astronomer in tears.
- The Bureau of Meteorology warned that the geomagnetic storm could threaten infrastructure and power supply.
- Another display was expected on Sunday night, with the possibility of a repeat on Monday.
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Medium
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Image Credit: Medium
Orcbit Presentation Templates
- Orcbit is a presentation template that offers professional designs for captivating presentations.
- The template features unique slides and is perfect for creating pitch decks, digital media kits, and marketing presentations.
- The package includes PowerPoint files and documentation, and it can be customized to suit individual needs.
- The template showcases a space and astronomy theme, with modern black and gradient elements.
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Scitechdaily
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Image Credit: Scitechdaily
Super-Earth Surprise: Webb Finds Atmosphere on Rocky Exoplanet For the First Time
- A possible atmosphere surrounding the 55 Cancri e exoplanet has been detected by scientists who used NASA’s James Webb Space Telescope ; this is the most definitive evidence of an atmosphere on any rocky planet outside our solar system.
- The exoplanet's surface is covered by a bubbling ocean of lava, and is extremely hot, so it is unlikely to be habitable.
- Researchers believe that the planet's atmosphere is probably rich in carbon dioxide or carbon monoxide that may be bubbling up from the ocean of lava covering the planet’s surface.
- The planet is classified as a super-Earth, having a diameter almost twice Earth’s size and slightly greater density. The planet is attritubted to be similar to the rocky planets in our solar system.
- The team from NASA’s Jet Propulsion Laboratory (JPL) used the Near-Infrared Camera (NIRCam) and Mid-Infrared Instrument (MIRI) to measure 4- to 12-micron infrared light coming from the planet.
- The team used secondary eclipse spectroscopy, during which they measured the dip in the spectrum between 4 and 5 microns. This confirms the presence of an atmosphere containing carbon monoxide or carbon dioxide.
- The James Webb Space Telescope used by the team is an international program led by NASA with its partners, the European Space Agency (ESA) and the Canadian Space Agency.
- It is hoped that further exploration of rocky planets will be enabled by the use of the telescope’s new type of science.
- Research into additional observations of this exoplanet is continuing with the possibility of study into the conditions necessary for a habitable planet.
- This is all part of the James Webb Space Telescope's General Observers (GO) Program 1952, which is working to solve mysteries pertaining to our solar system, and planets around other stars, to unravel the complexities of our universe and our position within it.
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Medium
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Image Credit: Medium
Butterfly Space Digital Paper Free Download
- Introducing Butterfly Space Digital Paper! Elevate your designs with this mesmerizing digital background textures & images.
- Butterfly Space Digital Paper Collection features 12 enchanting designs that combine the delicate wings of butterflies with the mystique of the universe.
- Key features include 12 mesmerizing digital paper patterns, high-resolution visuals, perfect for digital projects, scrapbooking, and crafts.
- Unleash your creativity and elevate your creations to new heights of cosmic beauty with Butterfly Space Digital Paper.
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Medium
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Image Credit: Medium
Blank Space Font
- Introducing Blank Space Font! Elevate your designs with this mesmerizing sans serif font.
- Blank Space is a modern space font with a bold and contemporary style that explores the emptiness of outer space.
- This font is perfect for projects that demand a minimalist yet powerful typographic presence.
- Blank Space Font captures the essence of cosmic voids, combining a sleek modern design with a bold weight for impactful visuals.
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Medium
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Image Credit: Medium
The Best Dad in the Whole Galaxy T-shirt Unique Print Mock-ups
- The Best Dad in the Whole Galaxy T-shirt offers unique print mock-ups.
- It provides high-quality T-shirt design digital files that can be purchased.
- The files include EPS 10, JPG, and PNG formats.
- There is also an option to download 10 products for free with a risk-free trial.
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