Hubble Telescope's New Images: Galaxies Through Time
The newest images from Hubble help scientists see how galaxies evolve -- comparing present day to 11 billion years ago.
2 of 6
Galaxies, the building blocks of the universe, range from simple to very complex in structure. In 1926, American astronomer Edwin Hubble developed a classification scheme of galaxies, more commonly known as the Hubble tuning fork. The basic ideas still hold today in helping astronomers understand the theory of galaxy evolution. The diagram pictured is split into two parts: elliptical galaxies, or ellipticals, and spiral galaxies, or spirals. Hubble assigned ellipticals numbers from zero to seven, while spirals were given letters. It is now believed that galaxy evolution is much more complicated than Hubble's classification scheme.
How Enterprises Are Attacking the IT Security EnterpriseTo learn more about what organizations are doing to tackle attacks and threats we surveyed a group of 300 IT and infosec professionals to find out what their biggest IT security challenges are and what they're doing to defend against today's threats. Download the report to see what they're saying.
IT Strategies to Conquer the CloudChances are your organization is adopting cloud computing in one way or another -- or in multiple ways. Understanding the skills you need and how cloud affects IT operations and networking will help you adapt.