Science is all about measuring things. And astronomers say dark matter pervades our solar system. Can we find a way to measure it? 2 scientists say yes.
SpaceX is reporting 40 Starlink satellites doomed to reentry, after a storm on the sun caused a geomagnetic storm that disturbed Earth's magnetic field.
More than 4,000 satellites orbit Earth, and that number will grow by leaps and bounds in just a few years. Who owns all those satellites orbiting Earth?
NASA's Perseverance rover has found rocks with odd purple-colored coatings on them. What are these purple rocks on Mars? Could they be signs of microbial life?