Ancient Mars featured flowing rivers and sizable lakes — but that doesn't mean the Red Planet definitely could have supported life, one prominent researcher stresses.
The presence of liquid water is just one of many factors that researchers need to take into account when investigating the past or present habitability of Mars or any other cosmic body, astrobiologist and mineralogist Pamela Conrad wrote in a "Perspectives" piece published online on Dec. 11 in the journal Science.
"The things that make a place livable are numerous, and sometimes, there's a showstopper you didn't think of," Conrad, deputy principal investigator for the Sample Analysis at Mars instrument aboard NASA's Curiosity rover, told SPACE.com. "So it's important to take a poll of the diversity of attributes that could contribute to making an environment livable or not."
cientists around the world are tracking a doomed cloud of gas as it makes a daring approach toward the monster black hole at the center of our Milky Way galaxy, a cosmic encounter that might reveal new secrets on how such supermassive black holes evolve.
The G2 space cloud, and its ultimate death by black hole, have been under close scrutiny since the cloud's fate was first identified in 2011. Now, the cloud is destined to be shredded by a supermassive black hole.
Astronomers have discovered what may be a Thorne–Zytkow object (TZO), a binary star system where a neutron star is enveloped by a red giant or supergiant star. TZO's were first theorised in 1977 by Kip Thorne and Anna Zytkow. On June 4th, 2014 a team of astronomers led by Emily Levesque that included Zytkow published a paper identifying red supergiant star HV 2112 in the Small Magellanic Cloud as a possible TZO candidate.