Earth

The egg meanwhile is the largest cell and similarly intricate. Looking further out into the natural world, the diversity of these sex cells, or gametes, is truly remarkable.

Most species have two gametes, which we term male and female.

The complex alien solar system hosts the largest number yet of detected worlds capable of having liquid water on their surface, report a team of astronomers today in the journal Nature.

Wednesday, it was announced that Glenn had been hospitalized "more than a week ago," according to Ohio State University spokesman Hank Wilson. He was at The James Cancer Hospital, which is located at Ohio State University. His illness was not disclosed.

Glenn had heart valve replacement surgery in 2014.

Astronomers can currently detect planets outside our solar system through indirect methods like observing the changes in light from the distant stars when its planet passes across it. They have been doing this for more than 15 years, but unfortunately have not documented clear pictures of any exoplanets.

Firstly, even the closest star is several light years away. So when the astronomers observe these stars from an astronomical distance, their orbiting planets appear very close to the star. That defect disables the telescope from detecting them.

The Juno satellite, which left Earth five years ago, had to fire a rocket engine to slow its approach to the planet and get caught by its gravity.

A sequence of tones transmitted from the spacecraft confirmed the braking manoeuvre had gone as planned.

Receipt of the radio messages prompted wild cheering at Nasa's mission control in Pasadena, California.

"All stations on Juno co-ord, we have the tone for burn cut-off on Delta B," Juno Mission Control had announced. "Roger Juno, welcome to Jupiter."

The last time that the nations of the world struck a binding agreement to fight global warming was 1997, in Kyoto, Japan. As leaders gather for a conference in Paris on Monday to try to do more, it's clear things have changed dramatically over the past 18 years.

The researchers announced their discovery Thursday based on observations from NASA's Kepler space telescope.

"It is the closest thing that we have to another place that somebody else might call home," said Jon Jenkins, the lead data analyst from NASA's Ames Research Center in California.