Analyzing Pulsars: To Detect Subnanohertz Gravitational Waves

Detecting gravitational waves have always been a challenging task. It is caused due to high energetic events, like colliding black holes or neutron stars. And so, the phenomenon is like ripples on the fabric of space-time. By the time, this effect reaches us (from deep space), the signals become extremely weak. And hence, too faint to detect.   

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Cosmic Conundrum in the Milky Way: Lightest Black Hole or Heaviest Neutron Star

Exciting news from the cosmos! Astronomers from around the world, including the brains at The University of Manchester and the Max Planck Institute for Radio Astronomy in Germany, have stumbled upon an unknown object in the Milky Way. The newly discovered object is heavier than the heaviest neutron stars we know. And lighter than the lightest black holes we’ve seen. The team used the MeerKAT Radio Telescope, to spot this mysterious object. This celestial entity is in orbit around a high-speed millisecond pulsar, situated around 40,000 light years away in…

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Astronomers Pinpoint Oldest Known Black Hole: Time-Traveling with Telescopes

Recently, astronomers have detected a super-old black hole, which is devouring its galaxy. It is dated back to the earliest black hole ever. It’s like the ultimate space buffet for the oldest black hole. Researchers at the University of Cambridge, unleashed the NASA/ESA/CSA James Webb Space Telescope (JWST) to spot this ancient black hole. The gravity well is chilling out 400 million years post-Big Bang, that is, over 13 billion years back.

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Meteorites Unveiled as Earth’s Nitrogen Messengers

Tiny meteorites from the icy outer reaches of the Solar System might be the reason nitrogen ended up near Earth. Yes, we are talking about the early days of our solar system. A team of scientists from the University of Hawai’i at Manoa along with Kyoto University and others from around the globe recently published their discovery in Nature Astronomy.

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Book Review: A Universe from Nothing by Lawrence M. Krauss

A Universe from Nothing: Why There Is Something Rather than Nothing is a voyage to the forefront of cosmology. The book is written by acclaimed physicist Lawrence M. Krauss and was published in 2012. Krauss has beautifully blended his observational prowess, theoretical ingenuity, and technological advancements while framing the concepts and notions in his book. The idea that the universe emerged from random quantum fluctuations is, indeed, fascinating.

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Europa’s Slow Interior Evolution: Insights into the Jovian Moon’s Dynamic History

The surface area of Europa, one of Jupiter’s moons, is slightly smaller than Earth’s Moon. Yet it has garnered a lot of attention from scientists as a potential site for extra-terrestrial life. Here are some of the reasons, why it is considered as potential for hosting life: Surface and Ice Shell: The surface of Jovian moon is covered by a layer of ice that is believed to be several kilometers thick. When it comes to the entire solar system, its icy crust is one of the smoothest. This implies that…

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Lightning Processes on Jupiter and Earth are Same: Lightning Dynamics

Juno is the famous space probe sent by NASA to study Jupiter. It was launched in 2011 and reached the gas giant planet in 2016. Instead of orbiting around the equator like previous missions, Juno entered a path that takes it over Jupiter’s poles. After its arrival, the space probe has been gyrating the planet in a specific orbit. With the help of special instruments on board, Juno is constantly collecting information from Jupiter’s environment. The main aim of the expedition, is to gather accurate data about the planet’s gravity…

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A Star Swallowing Jupiter-sized Planet: Planetary Engulfment

When a star runs out of fuel, it eventually reaches the end of its life cycle and begin to expand. It swells to hundred or even a thousand times its original size. The process is called as a “red giant” phase. The progression enables the star’s outer layers to become less dense. Consequently, the star starts to swell outwards. In some cases, the star may expand so much that it engulfs any nearby planets.

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Two super-Earths orbiting M dwarf TOI-2095: Exoplanet Diversity

Astronomers are always looking for exoplanets since it opens the door for better understanding of the formation and evolution of planetary systems beyond our own. With this aim in mind, NASA launched the Transiting Exoplanet Survey Satellite (TESS) in 2018. Primary parameter of this was to monitor the brightness of nearby stars. Till now, TESS has surveyed nearly 200,000 of the brightest stars near the sun. And so far, it has identified about 6,400 candidate exoplanets. To date, 330 of these candidates have been confirmed as exoplanets through follow-up observations…

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Magnetic Star–planet Interactions: YZ Ceti b

Magnetic field is an important characteristic of a planet. And when it comes to Earth, the field is generated by the motion of molten iron in its core. It not only protects the atmosphere on Earth from cosmic radiations but it also deflects the charged particles spewed off by the sun. In absence of magnetic field, planet’s atmosphere would erode. Thus, making it less habitable.

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Gravity is Holographic Projection from a Higher-Dimension: De Sitter Space

According to Einstein’s theory of general relativity, gravity arises from the curvature of spacetime, caused by the presence of massive objects. This curvature, also, impacts the motion of all nearby objects thus, causing them to move in curved paths. General relativity however breaks down under extreme conditions such as those found in black holes and the early universe. These conditions comprise of high energies and densities, which exponentially influences the effects of quantum mechanics. And it has been observed that the laws of general relativity no longer provide a complete…

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