Space News & Blog Articles

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Dedicated Amateur Astronomer Makes Rare Pair of Asteroid Discoveries

Two recent asteroid discoveries made by an amateur astronomer highlight what is possible, with access to the right equipment.

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An Amateur Astronomer Discovered One-of-a-Kind Supernova Remnant

In 2023, amateur astronomer Dana Patchick was looking through images from the Wide-field Infrared Survey Explorer archive and discovered a diffuse, circular object in the constellation of Cassiopeia. He found this apparent nebula was interesting because it was bright in the infrared portion of the spectrum, but virtually invisible in the colors of light visible to our eyes. Dana added this item to the database of the Deep Sky Hunters amateur astronomers group, believing it was a planetary nebula – the quiet remnant of stars in mass similar to the sun. He named it PA 30.

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The Maddening Simplicity of Black Holes

Black holes.

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When Stars Consume Their Partners, We Could Detect a Blast of Neutrinos

You might be familiar with the bizarre ritual of the female praying mantis which, I’m told, bites off the head and eats other body parts of the poor male they just mated with. It seems consuming partners is not unheard of.  It’s even seen in the lives of stars where binary stars orbit one another closely and one star ultimately consumes the other. If the victim is a neutron star a burst of neutrinos can be generated and a new study reveals they might just be detectable on Earth. 

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Starship Could Be Ready to Launch on Friday

Space exploration should never be run of the mill nor something that finds itself on the back pages of the newspaper.  Captain James T. Kirk was right that space really is the final frontier and making it more accessible is one of the driving forces behind SpaceX.  Their mission to seek out new life and new civilisations, wait that’s wrong – that’s Starfleet.  The SpaceX mission ‘to revolutionise space technology, with the ultimate goal of enabling people to live on other planets is at the forefront of the development of the enormous Starship which may make another launch attempt as soon as this Friday 17th November. 

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How Black Holes Consume Entropy

Entropy is one of those fearsomely deep concepts that form the core of entire fields of physics (in this case, thermodynamics) that is unfortunately so mathematical that it’s difficult to explain in plain language. But we will give it a try. Whenever I see the word entropy, I like to replace it with the phrase “counting the number of ways that I can rearrange a scenario while leaving it largely the same.” That’s a bit of a mouthful, I agree, and so entropy will have to do.

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The Origins of the Black Hole Information Paradox

While physics tells us that information can neither be created nor destroyed (if information could be created or destroyed, then the entire raison d’etre of physics, that is to predict future events or identify the causes of existing situations, would be impossible), it does not demand that the information be accessible. For decades physicists assumed that the information that fell into a black hole is still there, still existing, just locked away from view.

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Need to Map an Iceberg in a Hundredth of a Second? Ask a Computer

Satellites really are quite a wonder.  They can help forecast the weather, track climate change and help you navigate around the world. There are even satellites that can not only track icebergs but can map the Antarctic in the merest blink of an eye. In fact, faster than that since a typical blink takes about 0.2 seconds but the Sentinel-1 satellites can map icebergs in just 0.01 seconds, that’s 20 times for every blink of an eye!

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Earth’s Past and Future Habitability Depends on Our Protection from Space Weather

A bewildering number of factors and variables led up to the planet we occupy today, where life finds a way to survive and even thrive in the most marginal conditions. The Sun is the catalyst for it all, propelling life on its journey to greater complexity with its steady fusion.

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An Epic Collaboration Between Hubble and JWST

In 2012, as part of the MAssive Cluster Survey (MACS), the Hubble Space Telescope (HST) discovered a pair of colliding galaxy clusters (MACS0416) that will eventually combine to form an even bigger cluster. Located about 4.3 billion light-years from Earth, the MACS0416 cluster contains multiple gravitational lenses that allow astronomers to look back in time and view galaxies as they appeared when the Universe was young. In a new collaboration that symbolizes the passing of the torch, the venerable Hubble and the James Webb Space Telescope (JWST) teamed up to conduct an extremely detailed study of MACS0416.

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If You Account for the Laniakea Supercluster, The Hubble Tension Might Be Even Larger

One of the great unsolved mysteries of cosmology is known as the Hubble tension. It stems from our inability to pin down the precise rate of cosmic expansion. There are several ways to calculate this expansion, from observing distant supernovae to measuring the Doppler shift of maser light near supermassive black holes, and they all give slightly different results. Maybe we don’t fully understand the structure of the Universe, or maybe our view of the heavens is biased given that we are located deep within a galactic supercluster. As a new study shows, the bias problem is even worse than we thought.

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How to Think About a Four-Dimensional Universe

In Einstein’s famous theory of relativity the concepts of immutable space and time aren’t just put aside, they’re explicitly and emphatically rejected. Space and time are now woven into a coexisting fabric. That is to say, we truly live in a four-dimensional universe. Space and time alone cease to exist; only the union of those dimensions remains.

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NASA Wants to Learn to Live Off the Land on the Moon

In preparation for the upcoming Artemis missions to the lunar south pole, NASA recently solicited a Request for Information (RFI) from the lunar community to map out its future Lunar Infrastructure Foundational Technologies (LIFT-1) demonstration for developing In-situ Resource Utilization (ISRU) technologies as part of the agency’s ambitious Lunar Surface Innovation Initiative (LSII). The primary goal of LIFT-1, which is being driven by NASA’s Space Technology Mission Directorate (STMD), is to advance ISRU technologies for extracting oxygen from the lunar regolith, including manufacturing, harnessing, and storing the extracted oxygen for use by future astronauts on the lunar surface. Proposals for LIFT-1 became available to be submitted via NSPIRES on November 6, 2023, with a deadline of December 18, 2023.

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ESA is Testing a Modular Multipurpose Rover that Could Be a Science Lab or a Tiny Bulldozer

Most rovers have been built for Mars, and each one of them is a complex machine designed with specific goals and terrains in mind. But the Moon is different than Mars. We’re not searching for life there; we’re trying to establish a presence.

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If We Could Find Them, Primordial Black Holes Would Explain a Lot About the Universe

There are three known types of black holes in the Universe: supermassive black holes that lurk in the centers of galaxies, stellar-mass black holes that are the remnants of massive stars, and intermediate-mass black holes that can be found in dense clusters of stars. But there is a fourth, hypothetical type of black hole known as primordial black holes (PBHs). If they exist, they could solve a few cosmological mysteries.

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Trisat-R’s 2-mm Camera Took This Picture of the Earth From 6,000 Km Away

Trisat-R’s innovative camera pioneering a new technology in space caught a unique view of our home world.

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Is Anything Absolute with Relativity?

The theory of relativity is at once simple and elegant but also maddeningly nonintuitive. There’s no need to get into the full guts and glory of that theory here, but there is one feature of Einstein’s work that takes center stage, and would eventually lead him into a complete reshaping of Newton’s gravity, altering our very conceptions of the fabric of the universe.

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Some of the Moon's Craters are From Interstellar Impacts. Can We Tell Which?

By discovering two interstellar objects (ISOs), we know that asteroids and comets from other star systems pass through the Solar System from time to time. By inference, some of these must have crashed into the Moon, creating impact craters. If we could study the impact sites, we might be able to learn about the star systems that they came from.

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Sometimes Compact Galaxies Hide Their Black Holes

Quasars, short for quasi-stellar objects, are one of the most powerful and luminous classes of objects in our Universe. A subclass of active galactic nuclei (AGNs), quasars are extremely bright galactic cores that temporarily outshine all the stars in their disks. This is due to the supermassive black holes in the galactic cores that consume material from their accretion disks, a donut-shaped ring of gas and dust that orbit them. This matter is accelerated to close to the speed of light and slowly consumed, releasing energy across the entire electromagnetic spectrum.

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ESA Plans to Eliminate New Space Debris by 2030

What can we do about space junk? We know how much debris is in orbit, and we know the problem is getting worse. It’s our fault.

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ESA Has a Difficult Choice: Study Mars, Earth's Magnetosphere, or Gamma-Ray Bursts

The European Space Agency (ESA) is looking to the future and contemplating its next M-class (Medium) mission. These missions are crucial to the ESA Science Programme (part of the agency’s Science Directorate), which aims to provide the best tools to ensure Europe’s continued participation in space exploration and sustain its capabilities in space by fostering innovation, maintaining launch services, and spacecraft operations. The latest round began in December 2021, when the ESA called for proposals for the next M-class mission to launch in the mid-2030s.

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