Can We Send a Probe to Proxima Centauri? Yes, But it May Get Banged Up On the Way There

Artist's conception of a Starshot spacecraft, a tiny circuit board-like wafer attached to a solar sail. Image Credit: breakthroughinitiatives.org

Artist’s conception of a Breakthrough Starshot spacecraft, a tiny circuit board-like “wafer” attached to a lightsail. Image Credit: Breakthrough Initiatives

Now that we know that the closest star system to us has at least one planet, an Earth-mass and potentially habitable one at that, there is one big question that a lot of people are […]

Pale Red Dot: Astronomers Discover Potentially Habitable Exoplanet Orbiting Nearest Star

Artist's conception of what Proxima b might look like. It is just slightly more massive than Earth and orbits in its star's habitable zone. Temperatures might allow liquid water to exist on its surface. A potentially habitable world, it is also now the closest known exoplanet. Image Credit:
ESO/M. Kornmesser

Artist’s conception of what Proxima b might look like. It is just slightly more massive than Earth and orbits in its star’s habitable zone. Temperatures might allow liquid water to exist on its surface. A potentially habitable world, it is also now the closest known exoplanet. Image Credit: ESO/M. Kornmesser

Astronomers today announced one […]

Two Earth-Sized Exoplanets May Exist in Closest Star System, Hubble Observations Reveal

Artist’s conception of the Alpha Centauri binary star system and the exoplanet Alpha Centauri Bb. Our own Sun is also shown in the distance. Image Credit: ESO/L. Calçada/N. Risinger

The closest star system to our own Sun may have two Earth-sized exoplanets orbiting it, a new study has shown based on observations by the […]

It's an Alien Blue World—But Nothing Like Earth

Artist’s conception of exoplanet HD 189733b—a “deep blue dot” reminiscent of Earth from a distance. Image Credit: NASA / ESA / M. Kornmesser

The planets and moons in our Solar System come in a wide variety of colors, and the natural beauty can be breathtaking. Now, the true color of a much more distant […]

Hubble Space Telescope Reveals Evidence of Farthest Known Planet From Its Star

A gap in the protoplanetary disk of dust and gas whirling around TV Hydrae uncovered evidence of an unseen, growing planet, according to astronomers studying Hubble data. Image Credit: NASA, ESA, J. Debes (STScI), H. Jang-Condell (University of Wyoming), A. Weinberger (Carnegie Institution of Washington), A. Roberge (Goddard Space Flight Center), G. Schneider (University […]

Hubble Space Telescope to Use Microlensing to Hunt for Nearby Exoplanets

Artist’s impression of a planet orbiting the red dwarf Proxima Centauri. Image Credit: Michael Kilderry.

It was announced this week at the 222nd meeting of American Astronomical Society that Proxima Centauri, a red dwarf and the closest star to the Sun, is predicted to pass in front of two unnamed background stars, one in […]

Astronomers Find Earth-Sized Planet Orbiting Alpha Centauri B

Artist’s concept of the newly-discovered planet, Alpha Centauri Bb, in orbit around its parent star, with Alpha Centauri A visible at bottom left and our Sun at upper right. The discovery was made by tracking perturbations in Alpha Centauri B’s movements as small as a baby’s crawl…an astonishing accomplishment when one considers that the […]