Reference Artemis is NASA's plan to go back to the moon.
A partial solar eclipse coincided with sunset in April 2022. This image tracks the movements of the sun and eclipse stages.
Using a full spectrum of wavelengths, observations of the Messier 66 galaxy shows the distribution of ionized gasses.
The Hubble Space Telescope's Wide Field Camera 3 revealed spectacular details of this spiral galaxy over 42 million light-years away from Earth.
The NASA Innovative Advanced Concepts (NIAC) program is funding a range of space tech studies in early development. In the future, they could assist space missions.
As the early universe cooled shortly after the Big Bang, bubbles formed in its hot plasma, triggering gravitational waves that could be detectable even today, a new study suggests.
Reference Learn how stars form, how stars and constellations are named, what happens when stars like our sun evolve, and ultimately, die.
Reference Heliocentrism places the sun at the center of the Solar System. This is the history of how scientists discovered our place and in the Solar System.
Reference The V2 rocket was the world's first liquid-propellant rocket. After claiming thousands of lives, how did it become a revolutionary breakthrough in rocket technology?
Reference Cosmology by definition is the branch of astronomy involving the origin and evolution of the universe, from the Big Bang to the future of the cosmos.
Reference This list of famous astronomers includes great scientists in history who mastered many fields and modern astronomers who helped popularize astronomy.
Reference Exactly how many stars are in the universe is impossible to know because we aren't sure of its scale.
Reference Geoengineering is the use of technology to alter Earth's climate. This can take place on Earth or in space.
Reference Astronomers say there are 100 billion to 200 billion galaxies in the universe. But accurately counting the number of galaxies depends on several factors.
Reference Albert Einstein profoundly changed physics and ideas about space and time. Learn his theories, find facts and quotes from the man with an IQ of 160.
Reference What is the sun made of? In several layers, hot gases are converted into energy and released as heat and light.
Reference Earth's star is the largest and the most massive object in the solar system. More than one million Earths could fit inside the sun.
Reference Scientists have found nearly 5,000 exoplanets since the first such world was confirmed orbiting a sunlike star in 1995. These ones are most similar to Earth.
Reference The universe was born with the Big Bang as an unimaginably hot, dense point. SPACE.com offers an overview of the universe and its history, age and structure.
Reference Metal 3D printing can produce the most intricate rocket parts, using combustion-resistant material