Sirius, in the constellation Canis Major, is the brightest star in the sky. It’s twice as massive as the Sun. Canopus, the ...

On April evenings, look to the west to spot the bright winter constellations of Orion, Gemini, Taurus, Auriga, Canis Major and Canis Minor. They’ll be gone soon, so check them out while you can.

When the moon is exactly on the opposite side of the Earth from the sun ... altitude to the left one sees Rigel, and directly above Rigel at about 60 degrees is Sirius, and if one turns to ...

New moons happen when the sun and the moon share the same celestial longitude, a position also called conjunction. You can't see the moon during this phase from Earth because the illuminated side ...

As a result, a handful of really bright stars, e.g., Rigel (Orion), Capella ... recently passed behind the Sun (superior solar conjunction) as seen from Earth, and is, therefore, not observable ...

New research suggests meteor showers are so unpredictable due to the Sun’s own motion around the solar‑system barycenter.

On April 20, the sun will square Mars, bringing two powerhouse energies together that are anything but subtle. Discover what ...

The ultimate purpose of PUNCH is to use its four instruments — three wide-field imagers (WFI) and a near-field imager (NFI) — ...

Their findings, published today in Nature Astronomy, indicate that carbon asteroids get obliterated by the Sun and Earth’s atmosphere before they can make it to ground. “We’ve long suspected ...

The sun may rise every morning, but the amount of sunlight reaching Earth's surface can substantially vary over decades, ...

NASA’s new PUNCH mission just opened its eyes to space, capturing its first images of the Sun’s outer atmosphere and the ...