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Astronomy 56 minutes ago

America's 'big glass' dominance hangs on the fate of two powerful new telescopes

More than 100 years ago, astronomer George Ellery Hale brought two Pasadena institutions together to build what was then the largest optical telescope in the world. The Mount Wilson Observatory changed the conception of humankind's ...

Astronomy 1 hour ago

Revealing the origin of unexpected differences in giant binary stars

Using the Gemini South telescope a team of astronomers have confirmed for the first time that differences in binary stars' composition can originate from chemical variations in the cloud of stellar material from which they ...

Astronomy 3 hours ago

Webb captures iconic Horsehead Nebula in unprecedented detail

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. These observations show a part of the iconic nebula ...

Astronomy 3 hours ago

Tidal disruption event ASASSN-19bt experiences unusual radio evolution, observations show

An international team of astronomers has conducted detailed radio and X-ray observations of a tidal disruption event (TDE) designated ASASSN-19bt. Results of the observational campaign, presented April 18 on the pre-print ...

Astronomy 23 hours ago

Here's why we should put a gravitational wave observatory on the moon

Scientists detected the first long-predicted gravitational wave in 2015, and since then, researchers have been hungering for better detectors. But the Earth is warm and seismically noisy, and that will always limit the effectiveness ...

Planetary Sciences Apr 28, 2024

The planetary orbit in Netflix's '3 Body Problem' is random and chaotic, but could it exist?

I first encountered the three-body problem 60 years ago, in a short story called "Placet is a Crazy Place" by American science fiction writer Frederic Brown.

Astronomy Apr 26, 2024

Research investigates radio emission of the rotating radio transient RRAT J1854+0306

Using the Five-hundred-meter Aperture Spherical radio Telescope (FAST), Chinese astronomers have investigated radio emission from a rotating radio transient known as RRAT J1854+0306. Results of the study, published April ...

Space Exploration Apr 25, 2024

NASA's Deep Space Optical Communications demonstration transmits data over 140 million miles

Riding aboard NASA's Psyche spacecraft, the agency's Deep Space Optical Communications technology demonstration continues to break records. While the asteroid-bound spacecraft doesn't rely on optical communications to send ...

Optics & Photonics Apr 25, 2024

Airborne single-photon lidar system achieves high-resolution 3D imaging

Researchers have developed a compact and lightweight single-photon airborne lidar system that can acquire high-resolution 3D images with a low-power laser. This advance could make single-photon lidar practical for air and ...

Astronomy Apr 24, 2024

NASA's Chandra releases timelapse movies of Crab Nebula and Cassiopeia A

New movies of two of the most famous objects in the sky—the Crab Nebula and Cassiopeia A—are being released from NASA's Chandra X-ray Observatory. Each includes X-ray data collected by Chandra over about two decades. ...

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