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Science · Cosmology Apr 18, 11:12 PM

DESI Completes 3D Map of Universe on Schedule, May Shed Light on Dark Energy

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The Dark Energy Spectroscopic Instrument (DESI) has completed its comprehensive three-dimensional map of the universe according to its original timeline, researchers announced. The newly completed dataset now awaits detailed analysis that scientists hope will help resolve fundamental questions about dark energy—the mysterious force driving the universe's accelerating expansion.

1 sources · 1 articles · reliability 80%

Science · North America · Physics Apr 18, 11:10 PM

NIST Physicist Completes Decade-Long Measurement of Universal Gravitational Constant

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Stephan Schlamminger, a physicist at the National Institute of Standards and Technology (NIST), has concluded a 10-year effort to measure the universal gravitational constant, a fundamental quantity that determines the strength of gravity throughout the universe. The measurement campaign culminated in the opening of an envelope containing a secret reference number used to unscramble the experimental data—a blinding technique employed to prevent unconscious bias during the lengthy measurement process. The gravitational constant, denoted as G, remains one of the least precisely known fundamental constants in physics, making high-precision measurements like Schlamminger's critical for testing theories of gravity and cosmology.

1 sources · 1 articles · reliability 75%

Science · Earth Observation Apr 18, 11:10 PM

NASA Releases Quality Assessments of Commercial Earth Observation Data from Satellogic and Tomorrow.io

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NASA's Commercial Smallsat Data Acquisition (CSDA) program has published quality assessment reports evaluating data from two commercial providers: Satellogic's NewSat satellite imagery and Tomorrow.io's precipitation radar data. The reports represent part of NASA's ongoing effort to document how commercial data sources can contribute to Earth science research and applications.

1 sources · 2 articles · reliability 95%