Avi Loeb discusses new radio observations, motion data, and size estimates for interstellar object 3I/ATLAS, outlining limits, uncertainties, and future observations ...

Biggest vs smallest - how do we measure up in the grand scheme of the universe? Explore the fascinating scales of existence, from quantum particles to the observable universe’s edge. A journey into ...

It came from outer space. Interstellar space, to be precise. From somewhere beyond the influence of our sun, possibly from ...

A strange, layered structure in deep space has captured astronomers’ attention, looking uncannily like a cosmic sandwich ...

Space environment health score shows how healthy - or stressed - Earth’s orbit is expected to become over the next 200 years.

In 2004, a bright point of light in the debris disk surrounding Fomalhaut was thought to be an exoplanet. But the spot ...

Interstellar Comet 3I/ATLAS makes its closest Earth pass early on Dec. 19. Here's what astronomers know about its origin and speed.

Astronomers have been treated to a stunning fireworks display from around a young star called The events, detected in 2004 ...

Active boundary heating and cooling can make a small object look much larger to thermal sensors, a step toward compact ...

Two cosmic collisions near the star Fomalhaut solve the mystery of a disappearing "planet" and show rare planetesimal crashes ...

Mysterious Bright Flashes in the Night Sky Baffle Astronomers Celestial transients shine furiously and briefly. Astronomers ...

According to NASA, an asteroid is labelled "potentially hazardous" based on a combination of factors: its size and how close ...