Learn about the Oort cloud, a vast area beyond the inner solar system that is believed to contain icy objects arranged in a spiral shape.

The inner Oort cloud, between 1,000 and 10,000 AU from the sun, displays a spiral formation with arms that extend 15,000 AU.

The edge of the Solar System is a strange place, full of oddities we've only just begun to probe. But perhaps the oddest of ...

Spain's H2 Fusión says its Solar Heat PR5 system uses PV energy to produce hot water for self-consumption in industrial ...

To see the parade, find a dark place with a clear view of the western horizon at nightfall. Mercury and Saturn will be low in ...

The start of 2025 has already provided spectacular views of the night sky and this week a rare event will take place. On the ...

A hidden structure at the farthest reaches of our solar system is challenging long-held theories. Using advanced simulations, ...

Researchers expect similar sodium salts to be found on the dwarf planet Ceres, in water plumes from Saturn's Enceladus, and ...

In reality, even as the near-Earth asteroid 2024 YR4 was moving away, ground-based telescopes were able to gather enough ...

On the afternoon of February 28, 2025, the other seven planets in the solar system will appear in the night sky at the same time, with Saturn, Mercury, Neptune, Venus, Uranus, Jupi ...

The alignment involves Mercury, Venus, Mars, Jupiter, Saturn, Uranus, and Neptune, all visible on the same side of the Sun.

Since Dec. 7, 2024, the red planet has been making its westerly retrograde. But on Monday, that all ends, according to ...