HS-ESS1-2
Construct an explanation of the Big Bang theory based on astronomical evidence of light spectra, motion of distant galaxies, and composition of matter in the universe.
- Planets
Saturn’s moon Enceladus wears a thick blanket of snow
Pits on the frosty moon reveal the snow’s surprising depth, up to 700 meters (2,300 feet) in some places.
- Planets
The dwarf planet Quaoar hosts an impossible ring
Quaoar’s ring lies outside the Roche limit. That’s an imaginary line beyond which rings aren’t thought to be stable.
- Physics
Let’s learn about the quantum realm
On the smallest scales, the universe behaves in some pretty strange ways.
- Space
NASA is readying to send humans back to the moon
The launch of NASA's Artemis I is a huge step toward sending humans back to the moon and beyond.
- Planets
Mars might still be volcanically active, quakes there suggest
Seismic rumblings picked up by NASA’s InSight lander hint at molten rock moving deep below the planet’s fractured surface.
- Space
Jets may have sculpted rings of Cat’s Eye nebula
The Cat’s Eye nebula is one of the most complex of its kind. A 3-D model now reveals the source of that complexity.
- Planets
Check out the first direct look at Neptune’s rings since the ’80s
The Voyager 2 spacecraft took the first pics of Neptune’s rings 33 years ago. Now, NASA’s James Webb telescope is providing a more detailed view of them.
- Physics
Mysteries about the universe abound, from its beginning to its end
Scientists have a good understanding of the laws that make our universe tick. But they still don’t quite know how it began — or will end.
- Physics
Cosmic timeline: What’s happened since the Big Bang
Energy, mass and the cosmos' structure evolved a lot over the past 13.82 billion years — much of it within just the first second.
- Space
A missing moon could have given Saturn its rings — and tilt
The hypothetical moon is being called Chrysalis. It could have helped tip the planet over before getting shredded to form Saturn’s rings.
- Physics
Let’s learn about ‘ghost particles’
Ghostly particles called neutrinos are so lightweight that for a long time, they were thought to have no mass at all.
- Tech
NASA’s DART spacecraft crashed into an asteroid — on purpose
This mission could provide a blueprint for how to deflect a killer asteroid, if one is ever found headed for Earth.
