Enormous X-ray bubbles balloon from the center of the Milky Way

Two giant, mysterious bubbles spew from the Milky Way’s heart, and now it appears the bubbles may have doubles. Scientists have known for a decade that two bubbles of charged particles, or plasma, flank the plane of the Milky Way. Those structures, known as the Fermi bubbles after the telescope that detected them, are visible […]

Tiny new species of sea blob hovers ‘like a hot air balloon’ over the seabed

Deep in an underwater canyon off the coast of Puerto Rico, there’s a party of balloon-like sea creatures keeping things festive in the abyssal depths. Their bodies are small — about the size of a golf tee (just over 2 inches, or 6 centimeters, long) — but they’re vibrant; when the creatures move and pulse, […]