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news Astronomy Evidence status: Peer reviewed · Observations of one system
JWST and ALMA find two feeding black holes 4,900 light-years apart in a merger 1.3 billion years after the Big Bang. How we know, and the X-ray caveat.
news Astronomy Evidence status: Peer reviewed · Population study of catalogue data
A Nature Astronomy study of 298 multi-planet systems finds two families split by planet mass and tied to host star mass and metals, with a bias caveat.
news Astronomy Evidence status: Peer reviewed · New observations
Rubin Observatory found two Neptune Trojans trailing the planet whose simulated orbits stay stable for 1 billion years, doubling the known L5 set to four.
news Astronomy Evidence status: Official announcement
NASA says Roman Space Telescope's main camera has 63 nm RMS optical error against a 90 nm requirement. The figures are the mission team's own.
news Astronomy Evidence status: Peer reviewed · JWST observations
JWST finds gas near Sagittarius A* holds about 1.8 times the Sun's metals, like nearby stars. Here is how it was measured and what stays uncertain.
news Astronomy Evidence status: Peer reviewed · Modelling of telescope observations
A new A&A study infers Neptune's deep atmosphere holds more oxygen than Uranus's, hinting at different origins. The ranges overlap and rest on mixing models.
news Astronomy Evidence status: Peer reviewed · Observational study
Gaia-based star ages suggest the Milky Way's disk thinned fast until 10.85 billion years ago, then slowly. How ages were found and what stays uncertain.
news Astronomy Evidence status: Peer reviewed · Interpretive/modelling study
A study matches Van Gogh's The Starry Night to the predawn sky of about 22 July 1889, a month after its usual date. What the evidence shows, and the catch.
explainer Astronomy
Why is the Moon orange tonight? Near the horizon its light crosses about 38 times more air, stripping out blue. See the maths, smoke's role and eclipse signs.
