The intriguing cycle of closest and farthest moons. Includes dates for 2015’s 13 perigees (closest points) and 13 apogees (farthest points).
Venus has been spectacular near Jupiter in the evening sky! Plus, now it’s headed for greatest brilliancy around July 10, 2015!
A new theoretical model focuses on the spiral arms now known to exist around some young stars. The spiral arms may enable rocky planets like Earth to form.
New Horizons gets ‘all clear’ for Pluto flyby, only 2 weeks away! Newest images of Pluto and Charon. Plus … methane detected on Pluto.
Sinkholes on Earth happen when a subsurface cavern collapses. On the comet, the caverns may be created by ices turning to gas, as the comet nears the sun.
Venus and Jupiter! Wow! And there’s so much more to come …
On June 15, a monster black hole started showing signs of extraordinary activity that hasn’t happened since 1989. Astronomers around the world are watching.
All five visible planets will appear together in the morning sky early next year – from about January 20 to February 20, 2016. That hasn’t happened since 2005.
Since the Philae comet lander renewed contact on June 13, the Rosetta mission team has struggled to establish a stable link.
ESA’s ExoMars consists of two separate missions to investigate Mars. The first, set to launch in January 2016, consists of an orbiter and lander.
NASA’s New Horizons spacecraft will fly through the Pluto system on July 14. It’s only 2 weeks away!
It was unmanned, and astronauts aboard the International Space Station still have 4 months of supplies. But it’s the third failed cargo mission to ISS in 8 months.
Two physicists say the universe’s expansion has sped up, then slowed down, 7 times since time began. They describe this oscillation as the universe “ringing.”
What forms the depressions holding liquid hydrocarbon lakes on Saturn’s moon Titan? It might be a process similar to that creating caves and sinkholes on Earth.
A Neptune-sized exoplanet is being trailed by an immense cloud of hydrogen. This discovery might also suggest a method for detecting extrasolar oceans.
The search for life beyond Earth has heated up. Here are some of the ways that scientists have been thinking and talking about it.
Biological processes can produce methane. Its presence in Martian meteorites might mean Mars was or is habitable for microbial life. Or it might not.
The moon will be full on July 2, to stage the first of two July 2015 full moons. The second of two full moons in a calendar month is often called a Blue Moon.
It’s not Disney quality, but these distant worlds are real and 3 billion miles (5 billion km) away.
It’s due to arrive sometime today (June 22, 2015). NOAA forecasters estimate a 90% chance of polar geomagnetic storms when the CME arrives. Aurora alert!
Scientific arguments suggest that alien civilizations should be common in our galaxy. If so, where is everybody? That question is known as the Fermi paradox.