Researchers have detected a rogue planet traveling the void between stars some 20 light years away. Rogue planets or brown dwarfs (which this might be) aren’t exactly rare, cosmologically speaking, but they tend to be very difficult to see. And yet, the way we found this particular planet/brown dwarf suggests we might locate other similar stellar objects through an application of the same technique.
NASA's Parker Solar Probe will be the first spacecraft to "touch" the sun, hurtling through the sizzling solar atmosphere and coming within just 3.8 million miles (6 million kilometers) of the surface. It's designed to take solar punishment like never before, thanks to its revolutionary heat shield that's capable of withstanding 2,500 degrees Fahrenheit (1,370 degrees Celsius).
Astronomers have calculated that Mars will be a mere 35.8 million miles (57.6 million kilometers) next Tuesday, July 31. That’s practically in our backyard by some measures. The following week on Friday, August 11, Mars will be in opposition to the sun. That means the two objects will be on the exact opposite sides of the Earth.
Famed astronomer Galileo Galilei discovered the first four moons of Jupiter way back in the early 1600s. More than 400 years later, astronomers are still finding moons orbiting the solar system’s largest planet.
In the time it takes you to read this sentence, uncountable trillions of neutrinos have passed through your body. These ghostly particles rain down on us from the sun, but also from sources outside our solar system. Just a tiny fraction of neutrinos will run into anything on Earth, but scientists just detected one from outside our galaxy for the first time ever.
The disk of our home galaxy - the Milky Way - is bigger than we previously thought. A new study shows it would take 200,000 years for a spaceship traveling at the speed of light to go across the entire galaxy.
The National Science and Technology Council released a report Wednesday calling for improved asteroid detection, tracking and deflection. NASA is participating, along with federal emergency, military, White House and other officials. For now, scientists know of no asteroids or comets heading our way. But one could sneak up on us, and that's why the government wants a better plan.
The solar system just got a bit stranger. As astronomers continue their ongoing quest to find the elusive Planet Nine, a team found a space rock that lends credence to the idea that a huge super-Earth planet really exists in the outer reaches of our solar system.
The James Webb Space Telescope is intended as the successor to Hubble, which is now more than 25 years old. Hubble was last services during one of the final Space Shuttle missions, and there are no plans to make another visit. When it stops working, that will be the end of the mission. The JWST was already supposed to be in space at this point, but it’s a complicated project costing more than $8 billion to date. NASA wants to get it right, and that has led to the latest delay.
In 1933, Fritz Zwicky first predicted the existence of invisible “dark matter” when he noticed galaxies were spinning faster than their masses predicted. Decades later, Vera Rubin found more evidence of dark matter in other galaxies. Physicists now think dark matter makes up 85 percent of the universe’s mass.Still, no one has seen the stuff down on Earth.