For only the second time ever, a collision between two asteroids has been observed around an alien star not too far beyond ...

The first X-ray portrait of comet 3I/ATLAS has turned a rare interstellar visitor into a powerful new probe of the space between the stars. By catching the comet in high-energy light, ESA’s XMM-Newton ...

For the first time, scientists have directly detected molecules in a Frisbee of gas and dust swirling around an alien gas-giant planet. “I didn’t think this was possible,” says astronomer Sierra Grant ...

For the first time, scientists have directly detected molecules in a Frisbee of gas and dust swirling around an alien gas-giant planet. “I didn’t think this was possible,” says astronomer Sierra Grant ...

The Dark Forest theory is one proposed solution to the famed Fermi Paradox, which has bewitched astronomers for more than half a century. To put it concisely, the paradox asks if the cosmos is nearly ...