Sign Up for Our Amazing Newsletter!
A daily update by email. Science news, great photos, sky alerts.
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.
Comet Siding Spring’s near-miss of Mars was October 19
The close pass of Comet Siding Spring to Mars was exciting! Closest approach was October 19. Watch for photos from the event here at EarthSky.org.
October 19, 2014
Video: Comet Siding Spring’s close encounter with Mars
Here's a 2-minute video on the comet's October 19 near-miss of Mars, and how orbiting spacecraft will evade onslaught of dust particles from the comet.
October 19, 2014
Milky Way strips nearby galaxies of star-forming hydrogen
Astronomers have discovered that our nearest galactic neighbors are devoid of star-forming gas, and that our Milky Way is to blame.
October 16, 2014
What are super-Earths made of?
Astronomers struggle to learn about super-Earths - bigger than our Earth, smaller than Neptune - the most common type of planet found by the Kepler spacecraft.
October 16, 2014
Alright! Hubble finds potential targets for Pluto spacecraft
After a long search at the solar systems' fringes, scientists say they have three possible targets for the New Horizons spacecraft after its July 2015 Pluto flyby.
October 15, 2014
Spacecraft catches Mars atmosphere in act of escaping
Earth's atmosphere is leaking into space, too, but only very, very slowly. Meanwhile, Mars is thought to have lost much of its atmosphere already.
October 15, 2014
Milky Way’s dark matter half what we thought?
Australian astronomers say our Milky Way galaxy has only half the dark matter we thought it did. If so, it explains the shortage of Milky Way satellites.
October 13, 2014
Active moon volcanos in geologically recent times
Last volcanic activity on moon thought to be a billion years ago. Now small lava flows on moon’s dark plains suggest activity as recently as 50 million years ago.
October 12, 2014
MESSENGER spacecraft sees lunar eclipse from Mercury
The MESSENGER spacecraft, now orbiting Mercury, caught the images to make this movie of last Wednesday's lunar eclipse. See Earth and moon from Mercury!
October 11, 2014
Mapping the weather on an extreme exoplanet
Scientists using the Hubble Space Telescope have completed the first map of temperature and water vapor on a "hot Jupiter," an exoplanet called WASP 43b.
October 9, 2014
