NASA's Spitzer Space Telescope, the youngest member of the "Great Observatory" programme, has completed 15 years in space.

There's reason to be optimistic about Mars Opportunity rover that has been silent since June 10, after getting caught in a massive dust storm on the Red Planet that cut off solar power for the nearly 15-year-old rover, NASA said in a statement.

A so-called "foreign object debris" spotted by Mars rover Curiosity and speculated to be a piece of spacecraft debris has turned out to be a very thin flake of rock, NASA has said.

US scientists have predicted a fundamental asymmetry in the mechanism of water, which had previously gone unnoticed.

Global commercial launch provider Arianespace would launch three more heavy Indian satellites from its rocket port at Kourou in French Guiana over the next 9 months, a top space official said on Sunday.

NASA on Sunday said it had launched Parker Solar Probe, the US space agency's historic small car-sized probe, on its seven-year space odyssey that will take it gradually closer to the Sun at 3.8 million miles.

NASA on Sunday successfully launched the Parker Solar Probe, the US space agency's historic small car-size probe to "touch the Sun," from the Cape Canaveral Air Force Station in Florida.

"3-2-1... and we have liftoff of Parker #SolarProbe atop @ULAlaunch's #DeltaIV Heavy rocket," the US-based space agency tweeted. The launch was initially planned for Saturday morning.

NASA is all set to launch its historic small car-size probe to "touch the Sun" from Cape Canaveral Air Force Station in Florida at 3.33 am EDT (1 pm India time) on Saturday.