NASA’s Nancy Grace Roman Space Telescope will be able to explore even more cosmic questions, thanks to a new near-infrared filter. The upgrade will allow the observatory to see longer wavelengths of light, opening...

Learn why Pluto was once considered a planet but is now classified as a dwarf planet. The video discusses the discovery of the Kuiper Belt and the debates that led to the reclassification of Pluto.

Neptune is the farthest planet from the sun in our solar system. It has 14 known moons and five rings. Learn more about Neptune and its climate.

In this video, we explore the fascinating characteristics and significance of our moon. From its formation billions of years ago to its impact on Earth's tides, the moon has played a crucial role in shaping our understanding of astronomy...

View "Beyond Einstein: Part I" at:Albert Einstein's theories rank among humanity's greatest achievements. They sparked the scientific revolution of the 20th Century. In their attempts to understand how space, time and matter are...

Explore the fascinating phenomenon of tides and how they are influenced by the gravitational forces of the moon and the sun. We learn how ancient civilizations accurately predicted tides and how this knowledge continues to be crucial for...

In this video, the topic of discussion is the Kuiper Belt, a region in our solar system that extends from the orbit of Neptune. It is similar to the asteroid belt but much larger, and is home to three recognized dwarf planets, including...

There are apparently no shadows in these images. But they were taken during the brightest part of the day. There are only certain parts of the year and certain times of day when you can experience the subsolar point or Lahaina noon....

Abraham (Avi) Loeb is the Frank B. Baird, Jr., Professor of Science at Harvard University. He received a PhD in Physics from the Hebrew University of Jerusalem in Israel at age 24 (1980-1986), led the first international project...

A new book reasserts the astronomer author’s controversial claim about mankind’s first observed interstellar object

About a thousand times a day, thunderstorms fire off fleeting bursts of some of the highest-energy light naturally found on Earth. These events, called terrestrial gamma-ray flashes (TGFs), last less than a millisecond and...

This video provides a brief biography of Neil Armstrong, the first person to walk on the moon. It highlights his early career as a naval aviator and his work as an engineer and test pilot for NACA, which later became NASA. The video also...

This video provides an overview of Mars, the fourth planet from the Sun. It highlights key facts such as its diameter, mass, moons, and orbit period. The video also explains the origin of Mars' name, its association with the God of War,...

In this video, we explore the moon Enceladus, one of Saturn's largest moons. With its icy surface and potential cryo volcanic activity, Enceladus has captured the interest of scientists. Its unique features and the presence of water...

This video provides a description of the planet Jupiter. It describes Jupiter as a gas giant composed mainly of gases like ammonia, sulfur, and hydrogen. The interior of the planet is explained to consist of compressed hydrogen gas,...

Astronomers using the Hubble Space Telescope discovered a moon orbiting dwarf planet Makemake -- the third largest known object past the orbit of Neptune, about two thirds the size of Pluto. Further observations of this moon may...

In a time when women were discouraged from studying math and science, Nancy Grace Roman became a research astronomer and the first chief of astronomy at NASA. Known today as the “Mother of Hubble,” she was...

A half-kilometer-wide asteroid will zoom past Earth on Nov. 29, according to NASA’s Jet Propulsion Laboratory.

Recently astronomers used the Suzaku orbiting X-ray observatory, operated jointly by NASA and the Japanese space agency, to discover the largest known reservoir of rare metals in the universe. Suzaku detected the elements chromium and...

What’s the right balance between theory and observation? Dr. Michael Brown answers your question in this special “Mysteries of the Cosmos” edition of Ask a Scientist.

In three years, NASA's Fermi has detected more than 100 gamma-ray pulsars, but something new has appeared. Among a type of pulsar with ages typically numbering a billion years or more, Fermi has found one that appears to have been...

A total solar eclipse passed across North America on August 21, 2017. Are there other total solar eclipses in the solar system?

A study published in Nature suggests the tidal forces that formed Oumuamua may have caused its erratic behavior.

The greatest origin story of all unfolds with the James Webb Space Telescope. Webb's launch is a pivotal moment that exemplifies the dedication, innovation, and ambition behind NASA and its partners, the European Space...