In this video, we derive the speed required for a stable circular orbit around Earth using Newton’s law of gravitation and centripetal force. You’ll see how orbital speed depends on radius, why low ...

Space is cold and has abundant solar energy — the very things data centers need. Experts tell us it’s not that simple.

Now, a new Nature study points to an answer by catching four planets at a stage most systems never show us: The awkward, ...

Astronomers at the Center for Astrophysics | Harvard & Smithsonian have uncovered direct evidence that the red supergiant ...

Jupiter's Hill radius on 16 March 2026. Harvard's Avi Loeb suggests the object could release a 96th moon, marking a potential ...

After passing Earth, interstellar comet 3I/ATLAS will fly close to Jupiter and its moon Eupheme in March 2026, marking a key moment in its outbound journey ...

Most planetary systems contain worlds larger than Earth but smaller than Neptune, and the low-density planets around one ...

Planets larger than Earth but smaller than Neptune are the most common kind in the galaxy, but because our solar system lacks such a planet, scientists don’t know much about how they form. Astronomers ...

Everyday life is saturated with location-dependent devices. They are multiplying faster than ever and their requirements have ...

Michael Nicholls, vice president of Starlink engineering, posted the news on social platform X, announcing the company’s plan to change the orbit of the satellites in order to reduce the chances of ...

Surprised astronomers just discovered a world that blurs the line between planet and stellar remnant, hiding in a system known as a “black widow. ” Using NASA’s James Webb Space Telescope, researchers ...

Human spaceflight is once again confronting a familiar problem: how to protect astronauts during long missions far beyond Earth. Engineers at Russia’s Energia Space Rocket Corporation, part of the ...