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Two large Martian rocks with circular drill holes and light-colored dust are shown on a sandy, rocky surface. Part of a rover’s equipment, searching for traces of organics or signs of Mars life, is visible at the bottom of the image.
Starts With A Bang
Finding organics on Mars means absolutely nothing for life
The red planet, Mars, may once have been teeming with life, just as Earth is today. Finding "organics" on Mars, however, doesn't mean life.
Ethan Siegel
A dark, rocky planet orbits in space with the sun illuminating its edge, surrounded by stars and distant cosmic clouds.
Starts With A Bang
JWST could expose alien biosignatures on hazy exoplanets
The most common type of exoplanet is neither Earth-sized nor Neptune-sized, but in between. Could these haze-rich worlds house alien life?
Ethan Siegel
An artist's rendering of the nasa jupiter spacecraft.
Starts With A Bang
NASA to needlessly kill Juno mission to Jupiter this month
The Juno spacecraft, orbiting and imaging Jupiter since 2016, is still succeeding. Without a further extension, the mission now faces death.
Ethan Siegel
Side-by-side images of the Ring Nebula show its structure in different colors, each with a white dotted oval highlighting the central region.
Starts With A Bang
Did JWST catch the Ring Nebula forming new planets?
Our nearby Ring Nebula, with JWST's eyes, shows evidence for planet formation. Will the Sun eventually destroy, and then replace, the Earth?
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