Copernical Team
NASA's Hubble pauses science due to gyro issue
NASA is working to resume science operations of the agency's Hubble Space Telescope after it entered safe mode April 23 due to an ongoing gyroscope (gyro) issue. Hubble's instruments are stable, and the telescope is in good health.
The telescope automatically entered safe mode when one of its three gyroscopes gave faulty readings. The gyros measure the telescope's turn rates and are part of the system that determines which direction the telescope is pointed. While in safe mode, science operations are suspended, and the telescope waits for new directions from the ground.
This particular gyro caused Hubble to enter safe mode in November after returning similar faulty readings.
Q&A: How to catch a glimpse of a new star about to appear in the night sky
If you peer up at the constellation Corona Borealis—the Northern Crown—over the next several months, you may catch a glimpse: Astronomers predict that sometime this year, a new star will appear in the night sky, growing as bright as the North Star, then vanishing in a matter of days.
The source of that pinprick of light is a stellar system roughly 3,000 light-years from Earth called T Coronae Borealis, or T CrB. There, two stars circle each other, interacting in ways that—like clockwork—produce a powerful eruption of energy about once every 80 years—an event called a recurrent nova.
Webb captures iconic Horsehead Nebula in unprecedented detail
Image:
The NASA/ESA/CSA James Webb Space Telescope has captured the sharpest infrared images to date of one of the most distinctive objects in our skies, the Horsehead Nebula. The observations show a part of the iconic nebula in a whole new light, capturing its complexity with unprecedented spatial resolution.
The nebula formed from a collapsing interstellar cloud of material, and glows because it is illuminated by a nearby hot star. The gas clouds surrounding the Horsehead have already dissipated, but the jutting pillar is made of thick clumps of material that is harder to erode. Astronomers estimate that the Horsehead has
Two new satellites join the Galileo constellation
The European Galileo navigation system has two more satellites in orbit following their launch in the early morning of Sunday, 28 April, at 01:34 BST/02:34 CEST. With 30 satellites now in orbit, Galileo is expanding its constellation, increasing the reliability, robustness and, ultimately, the precision, benefiting billions of users worldwide.
Study traces bioluminescence back 540 million years in octocorals
Bioluminescence, the ability of organisms to emit light, originated in marine invertebrates known as octocorals at least 540 million years ago, a study by Smithsonian scientists indicates. This discovery extends the known timeline of bioluminescence's development in animals by about 300 million years.
Published in the Proceedings of the Royal Society B on April 23, the study provides new i Discover What Website Can Help Me With My Physics Homework
Physics is one of the most fascinating disciplines that possesses the keys to the Universe. On the other hand, it is one of the most complex sciences. Students describe physics as a fantastic and contemporary terrible subject. Physics problems with homework are known to be challenging due to some mathematical concepts included in physics.
Besides the theoretical part, this discipline provi Superradiant atoms enhance time measurement precision
Researchers at the University of Copenhagen have developed a method that could enhance the precision of measuring time by leveraging the properties of superradiant atoms. This approach aims to address some of the existing limitations of modern atomic clocks, which are crucial in technologies ranging from GPS systems to space travel.
The second, as a unit of measurement, is defined with gre Bridging the gap: USUS computer scientists develop new model
In the heart of a bustling metropolis, a small, unassuming cafe sits tucked away on a quiet street, a hidden gem among the urban sprawl. Inside, the warm glow of hanging Edison bulbs illuminates the room, casting a soft light on the eclectic mix of antique furniture and modern art that adorns the walls.
The air is filled with the rich aroma of freshly brewed coffee and the sound of low, mu SpaceX ties record with 20th Falcon 9 booster re-use in Galileo L12 launch
SpaceX has tied its own record with the 20th use of a Falcon 9 booster with its latest and final mission, the launch of a European Union Galileo L12 navigation and positioning satellite.
The booster powered a successful lift-off from NASA's Kennedy Space Center in Florida as scheduled at 8:34 p.m. EDT on Saturday, sending the satellite into medium-Earth orbit.
It was the 20th mis Revisiting multi-dimensional classification with a focus on dimensions
The issue of class imbalance has been well-studied in the multi-class classification framework, but its exploration within multi-dimensional classification (MDC) has been somewhat overlooked due to the complexity of the imbalance shift phenomenon. This occurs when a sample is categorized as belonging to both a minor and a major class, depending on the labeling dimension.
Addressing this ga 
