At the time, the Earth would have been far closer to the moon than it is today, making it perhaps twice as large in the lunar ...

Through the use of the electromagnetic spectrum, especially infrared, NASA scientists have peered deeper into Jupiter’s ...

Astronomers have probed the physical environment of repeating X-ray outbursts near monster black holes thanks to data from NASA's NICER (Neutron star Interior Composition Explorer) and other missions.

Observations of exoplanets typically provide astronomers little more than an orbit, a mass and a radius. If the radius and ...

If the object really is Planet Nine, it would be larger than Neptune and exist 700 times further from the sun than Earth.

A celestial leap is set to take place over two nights as the moon and Jupiter will appear to dance near to each other in the ...

New data from the James Webb Space Telescope suggests a planet in a faraway solar system was consumed by a star by hurling ...

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UMass Lowell Recognized as Top Research Institution with R1 Classification Read More ⁠ ...

We found that the planet is about twice the radius of Jupiter but only half its mass, making it less dense than water — about 0.1 g/cm³. What’s especially interesting is that models predict such a ...

Also known as the Ghost of Jupiter, this bubble of glowing gas is generated by a dying Sun-like star. It lies 1.8° south of magnitude 3.8 Mu (μ) Hydrae and shines at magnitude 7.8 — pretty ...

Though Jupiter and Saturn are outside the solar system's habitable ... "Microlensing is good at finding planets near the Einstein radius [the characteristic angle for gravitational lensing]." This ...