If we do discover that there are aliens orbiting other planets, will we know how to communicate with them? What messages can we send that they'll understand?

When space objects pass in front of other space objects, we call that a transit. And it turns out, they're not just fun to watch, they helped us figure out our place in the cosmos.

Using lunar samples from the Apollo missions, scientists have determined that the majority of water inside the Moon was delivered by meteors.

Billions of year ago, the Sun, the planets, and all other objects in the Solar System began as a giant, nebulous cloud of gas and dust particles.

A student at the University of British Columbia has discovered four new exoplanets in Kepler data.

Orbital ATK announced late Tuesday that the company's Antares medium-class commercial rocket outfitted with new first stage RD-181 engines has successfully completed a test firing of the powerplants.

Facebook CEO Mark Zuckerberg will conduct a live chat with ISS astronauts today, and it will be streamed at NASA's Facebook page.

Watch that Moon this weekend, as it crosses the dawn sky, meets up with Mercury, and ushers in Ramadan 2016.

The package of powerful science instruments at the heart of NASA's mammoth James Webb Space Telescope (JWST) have been successfully installed into the telescopes structure.

The Delta-4 Heavy launch scheduled for this weekend has been cancelled due to unspecified payload reasons.

Can we assume that aliens will evolve intelligence over the eons, and will this lead to other technological civilizations? Will aliens find big brains sexy?

CAPE CANAVERAL AIR FORCE STATION, FL - Spectacular imagery showcasing SpaceX's Thaicom blastoff on May 27 keeps rolling in as the firms newest sea landed booster sails merrily along back to its home port atop a 'droneship' landing platform.

Mars is reaching its closest point to Earth in 11 years, and will be a delightful to amateur astronomers.

The latest release by the New Horizons mission - a photo mosaic of pictures taken during its flyby - provides the clearest image of Pluto yet!

WALLOPS ISLAND, VA – The soon to be reborn Orbital ATK Antares commercial rocket sporting new first stage engines has been raised at its repaired launch pad on Virginia's eastern shore for a long awaited test firing of the powerplants. The static test firing is now slated to take place in less than 3 days on Tuesday evening, May 31.

Mars and Earth have many similarities, but the length of a year is not one of them! Compared to Earth, a Martian year is almost twice as long

CAPE CANAVERAL AIR FORCE STATION, FL. - Atop a billowing plume of fire and smoke a SpaceX Falcon 9 rocket soared to space this afternoon, Friday, May 27, as the crackling thunder of the engines roared across the Florida space coast and the company scored a stunning double headed launch and landing success.

A new study shows that there are multiple scenarios where exoplanet Kepler 62f could support life.