Mercury is tiny, barely bigger than the Moon. Its metallic core makes up 70% of the planet’s mass, vastly exceeding Earth’s 32% and Mars ’ 25%. It’s unlikely that the core actually formed like this.

(NewsNation) — In just a matter of days, the interstellar comet known as 3I/ATLAS is expected to pass closest to the sun between the orbits of Mars and Earth. New data from the International Gemini ...

We could be overlooking an entire population of asteroids that pose a threat to Earth on the very simple basis that they're extremely hard to see. In the space shared by the orbit of Venus, hundreds ...

This artist's concept depicts the protoplanet WISPIT 2b accreting matter as it orbits around its star, WISPIT 2.NASA/JPL-Caltech/R. Hurt (IPAC) The ...

The striking thing about this is that repeating the procedure on the star turned up no evidence of carbon-based chemicals, even though the system is young enough that it should still have a ...

Harvard astornomer Avi Loeb suggests interstellar object 3I/ATLAS could've sent off the Wow! Signal back in 1977.

Asteroid 2025 SA3, a 54-foot space rock, will safely pass Earth on September 30, 2025, at a distance of 1.67 million miles. This close approach, while ...

The NASA/ESA/CSA James Webb Space Telescope has provided the first direct measurements of the chemical and physical properties of a potential moon-forming disk encircling a large exoplanet. The carbon ...

The asteroid belt is found orbiting between Mars and Jupiter and is a vast collection of rocks that is thought to be a planet that never formed. When our solar system formed 4.6 billion years ago, the ...

The study emphasises that many of these asteroids are large enough, at least 140 metres wide, to be classified as ‘city killers’ if they were to strike Earth. Such an impact could devastate a large ...

A new study warns of an undiscovered population of asteroids that could strike Earth with little to no warning.

In our own solar system, there are pretty good odds that you could stand on the surface of an asteroid and not even be able to see another one! Today we know of more than a million asteroids in the ...