Hubble Sees Supernovae Split into Four Images by Gravitational Lens

Astronomers using NASA’s  Hubble Space Telescope have spotted for the first time a distant supernova split into four images. The multiple images of the exploding star are caused by the powerful gravity of a foreground elliptical galaxy embedded in a massive cluster of galaxies.
This unique observation will help astronomers refine their estimates of the amount and distribution of dark matter in the lensing galaxy and cluster. Dark matter cannot be seen directly but is believed to make up most of the universe’s mass.... Read More إقرأ المزيد | Share it now!

Hubble Observations Suggest Subsurface Ocean on Jupiter’s Largest Moon Ganymede

Nearly 500 million miles from the Sun lies a moon orbiting Jupiter that is slightly larger than the planet Mercury and may contain more water than all of Earth’s oceans. Temperatures are so cold, though, that water on the surface freezes as hard as rock and the ocean lies roughly 100 miles below the crust. Nevertheless where there is water there could be life as we know it.... Read More إقرأ المزيد | Share it now!

Our Place in the Universe – Dr. Jason Kalirai

“What is our place in the Universe?” Throughout human history, astronomy has repeatedly overthrown our understanding of this question and new telescopes and astronomers continue to do so. Join Jason Kalirai of the Space Telescope Science Institute as he explores 6,000 years of human astronomy, showcases the biggest discoveries of the Hubble Space Telescope, including some of his own work, and ponders current mysteries of the Universe that may be unlocked by NASA’s next flagship telescopes.... Read More إقرأ المزيد | Share it now!

Hubble National Teach-In

Join Hubble astronomers for an online exploration of the remarkable history and still-bright future of a telescope that has transformed both the way we do astronomy and our understanding of the universe. Discover the trials and triumphs of NASA’s first Great Observatory, learn about some of its remarkable scientific achievements, and experience a compendium of some of the greatest imagery the universe has ever known. Our featured speaker is Dr. +Frank Summers, outreach astronomer at the Space Telescope Science Institute.... Read More إقرأ المزيد | Share it now!