Galaxies

Not long ago I came across a piece in the Scientific American archives from the earliest days of very-long baseline radio interferometry, the technique employed by the Event Horizon Telescope.

New theories suggest the big bang was not the beginning, and that we may live in the past of a parallel universe

I love apostates, believers in or, better yet, conceivers of a theory who turn against it. They restore my faith in science, because they show that scientists can overcome attachment to their own brainchildren, a feat that is essential for progress and cannot be taken for granted.

Early in its history the Milky Way gobbled up many tiny galaxies. The cosmic rubble it left behind is now yielding fresh clues into how our corner of the universe came to be

822 Martian days after landing, NASA’s Curiosity rover, carrying the Mars Science Laboratory, continues on its extraordinary journey across landscapes that are both utterly alien, and remarkably familiar.

Today marks the 50th anniversary of the launch of NASA’s Mariner IV spacecraft (November 28, 1964). In total, the mission gave us 21 complete images of Mars, including this, our first close view of the planet—courtesy of data transmitted by the interplanetary probe and earth-bound scientists wielding pastels (below).

In an earlier blog post about Christopher Nolan's latest blockbuster movie, Interstellar, I lauded the film for its ambition, its visuals     and the strong performances of its cast.

Here’s a disquieting thought for your weekend: Dark Energy Might Be Stealing the Glue Holding the Universe Together. A new invisibility cloak simultaneously works for heat flow and electrical current.

I’m writing this post for two reasons. One is to recommend a new book by Columbia astrobiologist Caleb Scharf (who also writes a terrific Scientific American blog, “Life, Unbounded“), and the other is to defend an old book of mine.

Editor's Note: Welcome to ANITA, the Antarctic Impulsive Transient Antenna! From October to December, Katie Mulrey is traveling with the ANITA collaboration to Antarctica to build and launch ANITA III, a scientific balloon that uses the entire continent of Antarctica for neutrino and cosmic ray detection.

New research shows that magnetic fields played a role in the solar system's formation

As the European Space Agency’s Philae lander bounced and settled onto the surface of comet 67P/C-G’s crumbly nucleus it wasn’t just space exploration, it was time travel.