Bothell, Wash.-based Portal Space Systems shows off the lab where its solar thermal propulsion system will be developed.

Powering spacecraft with solar energy may not seem like a challenge, given how intense the sun's light can feel on Earth.

The 13th annual FortisTCI National Science and Technology Fair held on March 5 and 6, 2025, brought together more than 100 ...

In other words, if scientists can show that Earth's core contains a lot of helium-3, it will strongly suggest that the planet formed quickly, settling a long-standing debate about the birth of the ...

This stunning photo shows every single planet in the solar system at the same time during a rare alignment that won’t happen again until 2040. Taken from a field in Somerset, the groundbreaking ...

Because of this long-term stability, the inner Oort Cloud is usually modeled as a more-or-less flat disk aligned with the ecliptic plane of the Solar System. An illustration of the Oort Cloud.

The team's research indicates the Solar System's passage through the Orion region occurred between approximately 18.2 and 11.5 million years ago, with the most likely time between 14.8 and 12.4 ...

The team's research indicates the solar system's passage through the Orion region occurred between approximately 18.2 and 11.5 million years ago, with the most likely time between 14.8 and 12.4 ...

At the edge of our solar system, a host of large, icy bodies make up the Oort cloud, which appears to sport two spiral arms reminiscent of a disk-shaped galaxy. New research founded upon a simulation ...

Now every other world in our solar system will be visible among the stars at the same time — if you know where to look. According to Gerard van Belle, director of science at Lowell Observatory ...

23 (UPI) --A shell of icy objects at the edge of the solar system known as the Oort cloud ... night to begin their journey back to Earth. Science News // 1 day ago SpaceX Crew Dragon arrives ...

The mysterious Oort cloud is the source of many of our solar system's comets, but astronomers still have no idea what it looks like. Now, new simulations may have given them a first glimpse.