Lifeboat Foundation

A GIANT asteroid discovered by NASA’s trackers only last week is now barreling towards the Earth, the US space agency revealed.

Astronomers spotted gaps in the dusty discs around stars that can only be filled by planets.

Samples collected nearly 50 years ago during Apollo, combined with experimental studies that mirror the conditions inside planetary bodies provide compelling evidence.

While inspecting a known globular cluster, a team of astronomers began to notice that some of its stars didn’t seem to belong. Investigating further, they realized the anomalous stars were part of a nearby galaxy—one previously unknown to us.

Science works in mysterious ways.

One moment you’re investigating a globular cluster, and the next you’re unexpectedly writing a research paper about something else entirely, namely the discovery of previously unknown dwarf spheroidal galaxy. But that’s how it goes sometimes, and the authors of the new study, published this week in the Monthly Notices of the Royal Astronomical Society, couldn’t be happier.

Continue reading “Astronomers Accidentally Discover a Hidden Galaxy Right Next Door” »

Hoisting heavy machinery into space is cumbersome and expensive. Soon, however, it won’t be a problem. Cathal O’Connell reports.

The following is a transcript of the video

Alex Appolonia: This is almost half a million gallons of water being blasted a hundred feet into the air.

The most impressive part? It was all done in just 60 seconds.

Continue reading “Why NASA blasts half a million gallons of water during rocket launches” »

Astrochemists are chemically tracking our solar system’s building blocks of life back to interstellar space.

Someday recycled urine and exhaled breath could feed specially engineered yeast to make plastics and other useful chemicals on long space missions.

Very soon we might be able to say good riddance to the overheating laptops, phones and tablets that we deal with every day. Electrons carry information around circuits but lose energy as heat during transmission. Electrons are the best thing we have right now for computing, but in the near future we could wave goodbye to electronics and welcome photon, or light, communication that will be both faster and cooler. There are still few hurdles before we can get this technology in every home and every pocket, but one of its limitations was just solved by the development of a new metamaterial.

A metamaterial is a substance that has properties not observed in nature. In this case, the special property is its refractive index, a value that describes how light propagates through a medium. Take water or glass, for example, which cause light rays to bend as they travel through them. This is why pools always look shallower than they actually are.

The new metamaterial has a refractive index of zero, which means that the light phase in the material can travel infinitely fast. This doesn’t mean that relativity is violated by this material, though. Light has a “group velocity,” the velocity at which the wave propagates into space, and a “phase velocity,” the velocity at which the peaks of the waves move with respect to the wave.

Continue reading “New Metamaterial Transmits Light With No Energy Loss” »