Astronomy
The Moon is Earth's only natural satellite—a rocky body that orbits our planet and shines brightly in the night sky by reflecting sunlight. It formed about 4.5 billion years ago from debris left over after a massive collision between the early Earth and a Mars-sized
Astronomy
A planetary system is a collection of objects that orbit a star because of its gravity. This includes planets, moons, asteroids, comets, and other bodies. Unlike terms such as "solar system," which refers specifically to our Sun and its orbiting objects, a planetary system can involve any star
Astronomy
The solar eclipse of May 28, 1900, was a total solar eclipse during which the Moon completely covered the Sun along a narrow path on Earth. This eclipse was visible across parts of the southern United States and the Atlantic Ocean, with a partial eclipse seen over much of eastern
Astronomy
(612911) 2004 XR190 is a trans-Neptunian object, a minor planet orbiting the Sun beyond Neptune. It stands out because of its unusual orbit, which is both highly inclined and has a very distant closest approach to the Sun. These features make it an important target for astronomers studying the
Astronomy
If you're new to amateur astronomy and want to start observing the night sky effectively, the first step is choosing the right equipment, like binoculars or a beginner-friendly telescope. You'll also need to learn how to identify stars, planets, and constellations, set up your gear
Astronomy
Mariner 9 was a NASA spacecraft and the first to orbit another planet, arriving at Mars in 1971. Its mission aimed to study Mars in detail by mapping its surface, analyzing its atmosphere, and observing its moons over an extended period. This mission provided the first comprehensive, detailed views of
Astronomy
The International Space Orchestra is a musical group made up of astronauts, scientists, and musicians who share a connection to space exploration. It creates performances that combine space science with music to inspire curiosity about the universe and express artistic creativity. This orchestra stands out because it uses music to
History
Laika was the first living creature to orbit Earth, a stray dog sent into space by the Soviet Union in 1957. Her flight aboard Sputnik 2 demonstrated that a living being could survive the launch and weightlessness of orbit, even if only for a short time. Laika's mission
Astronomy
HD 219134 is a nearby star that hosts a system of planets, several of which are rocky and similar in size to Earth. It is a K-type main-sequence star located about 21 light-years from Earth. This star is important because its planetary system offers a clear example
Astronomy
The phrase "waters of Mars" refers to all forms of water that currently exist or once existed on the Red Planet, including ice, vapor, ancient lakes, and possible temporary liquid flows. Scientists study these waters to understand Mars' environmental history and to evaluate its potential for past
Astronomy
Christina Koch is an American electrical engineer and NASA astronaut known for her nearly 11-month mission aboard the International Space Station (ISS), which set the record for the longest continuous time spent in space by a woman. She has participated in important spacewalks, including the first all-female spacewalk.