Eye Spy a Planet: Hubble’s Universe Unfiltered

In 2008, Hubble released the first visible-light picture of a planet around another star. Planets around distant stars are extremely difficult to visualize — astronomers usually find them by observing the dimming of light as a planet passes in front of a star, or the wobble of the star as its tugged by the planet’s gravity.... Read More

Interacting Galaxies Galore: Hubble’s Universe Unfiltered

Hubble celebrated its 18th anniversary in 2008 by releasing a huge image gallery of interacting galaxies. Such galaxies pass close enough to each other that their mutual gravity can stretch and distort their shapes. Eventually, interacting galaxies merge together to form a single larger galaxy. However, since these interactions can take billions of years, how do we study them? ... Read More