HS-ESS1-4
Use mathematical or computational representations to predict the motion of orbiting objects in the solar system.
- Tech
Space trash could kill satellites, space stations — and astronauts
As private companies prepare to sprinkle space with tens of thousands of satellites, experts worry about the mushrooming threat of space junk.
- Physics
Scientists Say: Dark Energy
Dark energy is the unknown force causing the universe to expand faster and faster.
- Environment
Explainer: Gravity and microgravity
The force of gravity holds us on the ground, keeps planets in orbit and extends throughout space. A very weak gravitational pull is called microgravity.
- Planets
The long-awaited James Webb Space Telescope has a big to-do list
The James Webb Space Telescope has been in the works for so long that new fields of science have emerged for it to study.
- Planets
Astronomers may have found first known planet in another galaxy
The spiral-shaped Whirlpool galaxy may be home to the first planet spotted outside our own Milky Way galaxy.
- Planets
Pluto is no longer a planet — or is it?
In the 15 years since Pluto lost its status as a planet, some scientists continue to use whatever definition works best for them.
- Earth
Let’s learn about meteor showers
Meteor showers happen when Earth’s orbit passes through trails of debris left behind by comets or asteroids.
- Earth
Moon’s orbital wobble can add to sea-level rise and flooding
In a dozen years or so, the tide-enhancing effects of a wobble in the moon’s orbit should lead to dramatically higher sea levels in some coastal cities.
- Planets
This image may be the first look at exomoons in the making
These observations offer some of the best evidence yet that planets around other stars have moons, or exomoons.
- Planets
Born in deep shadows? That could explain Jupiter’s strange makeup
Dust that blocked sunlight might have caused the gas giant to form in a deep freeze, a new study suggests.
- Space
Cosmic filaments may have the biggest spin in outer space
These rotating threads of dark matter and galaxies stretch millions of light-years. Scientists want to know how their spin begins.
- Space
Moon-sized white dwarf is the smallest ever found
This dead star is also spinning very fast and has an amazingly powerful magnetic field.
