A New Way to Rebuild the Light Moving Around a Black Hole
A new image-reconstruction method helps recover motion near Sagittarius A* from simulated Event Horizon Telescope data.
radio astronomy
Is This Black Hole Finally Ending Its 34-Year Outburst?
A decades-long black-hole outburst is fading, but thick gas hides its X-rays. Radio clues suggest quiescence—not a settled verdict.
The Moon Could Turn One Orbiter Into a 100-Kilometer Radio Telescope
A lunar orbiter could use reflections from the Moon to build a virtual radio telescope and explore the low-frequency sky hidden from Earth.
The Brown Dwarf Whose Radio Bursts Defy the Usual Pattern
A frigid T8 brown dwarf sends radio bursts every 1.149 hours—but their weak, shifting polarization hints at hidden complexity.