Space
- Planets
Let’s learn about Mars
Traveling to Mars offers many challenges, including life without gravity, cosmic rays and communication delays.
- Brain
Scientists Say: Nucleus
Nucleus comes from the Latin term “nuc,” meaning nut or kernel. In science there are lots of nuclei. Every one of them is the center of something.
- Materials Science
Analyze This: Insect shells could help builders on Mars
When mixed with rocky soil, a compound called chitin makes a strong material. It could be pulled from the shells of insects used for food.
- Health & Medicine
Surviving Mars missions will take planning and lots of innovation
Astronauts that go to Mars will need protection from microgravity and radiation, plus mini-medical devices to diagnose problems and manage emergencies.
- Physics
Scientists Say: Gravity
Gravity is a fundamental force that attracts objects with mass to other objects with mass. It decreases with distance.
- Physics
This high-tech sweeper is designed for super-clingy moon dust
An electron beam is the newest tool being developed to remove sticky and damaging lunar dust from surfaces.
- Physics
2020 Physics Nobel goes for delving into black holes
Although Einstein’s general theory of relative suggested black holes might exist, this year’s winner’s helped show they actually are out there.
- Life
Scientists Say: Theory
A theory is an explanation of how part of the world works. It’s one that’s been tested many times and in many ways.
- Physics
Strange but true: White dwarfs shrink as they gain mass
Telescope observations of thousands of these stars now confirm a decades-old theory on how their masses relate to their waistline.
- Life
If bacteria stick together, they can survive for years in space
Tiny clumps of bacteria can survive at least three years in outer space. This raises the prospect of interplanetary travel by microbial life.
- Space
Scientists Say: Asteroid, meteor and meteorite
Asteroids, meteors and meteorites are all space rocks. But one is in orbit, another is in the atmosphere and the third is on the ground on Earth.
- Planets
Let’s learn about space robots
Space robots can take pictures of other planets, analyze samples of their surface and even peer into their interiors.
