Dark Energy

7 reports
Dark Energy is an astronomical phenomenon recognized by characteristic signals, timescales, energy scales, and source environments. Evidence comes from cosmological constant, cosmic microwave background, and accelerating cosmic expansion, and competing models remain viable when observations are sparse or indirect.

Reporting makes sense of Dark Energy by comparing large-scale structure and cosmological parameters, with separate attention to competing models. Conclusions concerning large-scale structure remain tied to instrument calibration, population statistics, and transparent methods; any broad claim must allow for the fact that selection effects and uncertain source distances can alter inferred rates or energies.

eROSITA X-ray Survey Nearly Doubles Known High-Energy Cosmic Sources

The eROSITA X-ray telescope's latest data release catalogs nearly 2 million X-ray sources, offering an unprecedented view of black holes, galaxy clusters, and stellar remnants across the universe

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NASA's Roman Space Telescope Targets Dark Energy and Exoplanets

NASA's Nancy Grace Roman Space Telescope, set for launch in 2026, will use infrared instruments to investigate dark energy, dark matter, and exoplanets from a stable orbit 1.5 million kilometers from Earth

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Astronomers Map 4 Billion Cosmic Objects in Largest 2D Sky Survey

A new 2D map of the universe, built from 13 years of ground and space-based observations, catalogs 4 billion stars, galaxies, and other objects, offering an unprecedented resource for future astronomical research

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Faint X-ray Flash Reveals Unusual Supernova in Nearby Galaxy

A brief X-ray signal detected by China's Einstein Probe in March 2026 has allowed astronomers to observe the earliest moments of a rare Type Ic supernova, offering new insight into how massive stars end their lives

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NASA Prepares Roman Space Telescope for Early Launch to L2 Orbit

NASA's Nancy Grace Roman Space Telescope is set for launch on August 30, aiming to deliver wide-field infrared surveys and exoplanet imaging from a stable orbit beyond the Moon

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NASA Prepares Roman Space Telescope for 2026 Launch to L2 Orbit

NASA has fueled the Roman Space Telescope, a next-generation infrared observatory scheduled for launch in August 2026, aiming to collect hundreds of terabytes of cosmic data annually and expand studies of dark matter, dark energy, and exoplanets

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Dark Energy Camera Reveals Star Formation in Corona Australis Cloud

The Dark Energy Camera has imaged the Corona Australis Molecular Cloud, capturing intricate details of a nearby star-forming region and highlighting the interplay of gas, dust, and young stars in one of the closest stellar nurseries to Earth

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