Mars

New results suggest evidence for extraterrestrial life could be near at hand

In astronomy, bigger is almost always better. The size of a telescope’s aperture (or primary optical element) not only determines how many pesky little photons it can capture, but also the ultimate resolution of the image that can be formed.

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.

The first human-rated U.S. spacecraft since the space shuttle took an unmanned trial run on Friday
 

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.

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).

Congress can be...chaotic. Last Thursday night, President Obama unveiled plans for immigration reform, and literally challenged Congress to stop him.

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.

Christopher Nolan’s new film, Interstellar, is a near-future tale of astronauts departing a dying Earth to travel to Saturn, then through a wormhole to another galaxy, all in search of somewhere else humanity could call home.

I’ve been mentioning R&D in talks and articles a lot lately. Most audiences outside the beltway don’t immediately know I mean Research and Development – until I explain it’s the part of our federal budget accounting for a good deal of “science stuff.” R&D supports basic research and leads to new innovation while helping boost [...]