Astronomers from the University of Sheffield and Pennsylvania State University have performed X-ray and optical observations ...

Saturn is below Venus and very low in the predawn sky. In late April it is five degrees above the horizon. You may need ...

Scientists suspected the ice giant hosted auroras—and had already observed them on Jupiter, Saturn and Uranus. But an ...

Combining this snapshot with Hubble observations from 1994 will reveal the motion of individual knots and filaments of gas over that span of time, enhancing our understanding of this stunning nebula.

Vivian Poulin asks if the tension between a direct measurement of the Hubble constant and constraints from the early universe ...

Six overlapping observations taken using the Hubble Space Telescope at both visible and infrared wavelengths were combined to ...

Believe it or not, we've seen a few optical illusions in space over the year. Well, we haven't seen them – the Hubble ...

This model has explained many observations, such as the structure of galaxies and the cosmic microwave background. However, recent tensions, particularly regarding the Hubble constant and the ...

But Hubble observations of the orbit of the outermost object were used to determine that the central body is not a single spherical object. Other possibilities are that the inner object is a ...